Andrew Ellicott (January 24, 1754 – August 28, 1820) was an American
land surveyor who helped map many of the territories west of the
Appalachians, surveyed the boundaries of the
District of Columbia
Washington, D.C., formally the District of Columbia and commonly known as Washington or D.C., is the capital city and Federal district of the United States, federal district of the United States. The city is on the Potomac River, across from ...
, continued and completed
Pierre (Peter) Charles L'Enfant's work on the plan for
Washington, D.C., and served as a teacher in survey methods for
Meriwether Lewis
Meriwether Lewis (August 18, 1774 – October 11, 1809) was an American explorer, soldier, politician, and public administrator, best known for his role as the leader of the Lewis and Clark Expedition, also known as the Corps of Discovery, with ...
.
Early life
Andrew Ellicott was born in
Buckingham Township,
Bucks County,
Pennsylvania
Pennsylvania, officially the Commonwealth of Pennsylvania, is a U.S. state, state spanning the Mid-Atlantic (United States), Mid-Atlantic, Northeastern United States, Northeastern, Appalachian, and Great Lakes region, Great Lakes regions o ...
as the first of nine children of
Joseph Ellicott (1732–1780) and his wife Judith (née Blaker or Bleaker, 1729–1809). The
Quaker
Quakers are people who belong to the Religious Society of Friends, a historically Protestant Christian set of denominations. Members refer to each other as Friends after in the Bible, and originally, others referred to them as Quakers ...
family lived in modest conditions; his father was a
miller and clockmaker. Young Andrew was educated at the local Quaker school, where
Robert Patterson, who later became a professor and vice provost at the
University of Pennsylvania
The University of Pennsylvania (Penn or UPenn) is a Private university, private Ivy League research university in Philadelphia, Pennsylvania, United States. One of nine colonial colleges, it was chartered in 1755 through the efforts of f ...
in
Philadelphia
Philadelphia ( ), colloquially referred to as Philly, is the List of municipalities in Pennsylvania, most populous city in the U.S. state of Pennsylvania and the List of United States cities by population, sixth-most populous city in the Unit ...
, was his teacher for some time. Andrew was a talented mechanic like many of the family and showed some mathematical talent, too.
In 1770, his father, together with his uncles
Andrew
Andrew is the English form of the given name, common in many countries. The word is derived from the , ''Andreas'', itself related to ''aner/andros'', "man" (as opposed to "woman"), thus meaning "manly" and, as consequence, "brave", "strong", "c ...
and
John, purchased land on the falls of the
Patapsco River
The Patapsco River ( ) mainstem is a river in central Maryland that flows into the Chesapeake Bay. The river's tidal portion forms the harbor for the city of Baltimore. With its South Branch, the Patapsco forms the northern border of Howar ...
, upriver and west of
Baltimore
Baltimore is the most populous city in the U.S. state of Maryland. With a population of 585,708 at the 2020 census and estimated at 568,271 in 2024, it is the 30th-most populous U.S. city. The Baltimore metropolitan area is the 20th-large ...
and the
Chesapeake Bay
The Chesapeake Bay ( ) is the largest estuary in the United States. The bay is located in the Mid-Atlantic (United States), Mid-Atlantic region and is primarily separated from the Atlantic Ocean by the Delmarva Peninsula, including parts of the Ea ...
.
There they set up a new milling business, founding the town of
Ellicott's Mills in 1772 (today's Ellicott City, Maryland). Three years later, Andrew married Sarah Brown (1756/8–1827) of
Newtown, Pennsylvania, with whom he would have ten children, one of which died as a child. When the
Revolutionary War broke out in 1775, Andrew enlisted as a commissioned officer in the Elk Ridge Battalion of the newly organized Maryland state militia despite his Quaker upbringing. During the course of the war, he rose to the rank of
major
Major most commonly refers to:
* Major (rank), a military rank
* Academic major, an academic discipline to which an undergraduate student formally commits
* People named Major, including given names, surnames, nicknames
* Major and minor in musi ...
, a title he would keep as an honorific throughout his life.
Survey work
After the war, Ellicott returned home to Ellicott's Mills until he was appointed, in 1784, a member of the survey group tasked with extending the survey of the
Mason-Dixon line for the borders between Pennsylvania /
Delaware
Delaware ( ) is a U.S. state, state in the Mid-Atlantic (United States), Mid-Atlantic and South Atlantic states, South Atlantic regions of the United States. It borders Maryland to its south and west, Pennsylvania to its north, New Jersey ...
with
Maryland
Maryland ( ) is a U.S. state, state in the Mid-Atlantic (United States), Mid-Atlantic region of the United States. It borders the states of Virginia to its south, West Virginia to its west, Pennsylvania to its north, and Delaware to its east ...
that had been abandoned in 1767 and then been stalled during the war. In this survey, he worked alongside
David Rittenhouse and Bishop
James Madison
James Madison (June 28, 1836) was an American statesman, diplomat, and Founding Fathers of the United States, Founding Father who served as the fourth president of the United States from 1809 to 1817. Madison was popularly acclaimed as the ...
, making first connections with the scientific society of Philadelphia.
Following the death of their second son, the Ellicotts moved to Baltimore in 1785, where Andrew taught mathematics at the Baltimore Academy and was even elected to the
Maryland General Assembly
The Maryland General Assembly is the state legislature of the U.S. state of Maryland that convenes within the State House in Annapolis. It is a bicameral body: the upper chamber, the Maryland Senate, has 47 representatives, and the lower ...
(state legislature) in 1786. The same year, he was called upon for a survey to define the western border of
Pennsylvania
Pennsylvania, officially the Commonwealth of Pennsylvania, is a U.S. state, state spanning the Mid-Atlantic (United States), Mid-Atlantic, Northeastern United States, Northeastern, Appalachian, and Great Lakes region, Great Lakes regions o ...
with the
Ohio Country. This "Ellicott Line" (running north–south at longitude meridian 80°31′12″W) later became the
principal meridian
A principal meridian is a meridian used for survey control in a large region.
Canada
The Dominion Land Survey of Western Canada took its origin at the First (or Principal) Meridian, located at 97°27′28.41″ west of Greenwich, just west of ...
for the surveys of the future
Northwest Territory
The Northwest Territory, also known as the Old Northwest and formally known as the Territory Northwest of the River Ohio, was formed from part of the unorganized western territory of the United States after the American Revolution. Established ...
of the United States. His work in Pennsylvania intensified his ties with Rittenhouse and other members of the
American Philosophical Society
The American Philosophical Society (APS) is an American scholarly organization and learned society founded in 1743 in Philadelphia that promotes knowledge in the humanities and natural sciences through research, professional meetings, publicat ...
, to which he had been elected a member in 1785, and led to encounters with
Benjamin Franklin
Benjamin Franklin (April 17, 1790) was an American polymath: a writer, scientist, inventor, statesman, diplomat, printer, publisher and Political philosophy, political philosopher.#britannica, Encyclopædia Britannica, Wood, 2021 Among the m ...
and
Simeon De Witt. When he was subsequently appointed to lead other surveys in Pennsylvania, the family moved again in 1789 to
Philadelphia
Philadelphia ( ), colloquially referred to as Philly, is the List of municipalities in Pennsylvania, most populous city in the U.S. state of Pennsylvania and the List of United States cities by population, sixth-most populous city in the Unit ...
. By recommendation of Franklin, Ellicott got a position with the newly established government under the
Constitution
A constitution is the aggregate of fundamental principles or established precedents that constitute the legal basis of a polity, organization or other type of entity, and commonly determines how that entity is to be governed.
When these pri ...
and was tasked by first President
George Washington
George Washington (, 1799) was a Founding Fathers of the United States, Founding Father and the first president of the United States, serving from 1789 to 1797. As commander of the Continental Army, Washington led Patriot (American Revoluti ...
to survey the lands between
Lake Erie
Lake Erie ( ) is the fourth-largest lake by surface area of the five Great Lakes in North America and the eleventh-largest globally. It is the southernmost, shallowest, and smallest by volume of the Great Lakes and also has the shortest avera ...
and Pennsylvania to determine the border between
Western New York
Western New York (WNY) is the westernmost region of the U.S. state of New York (state), New York. The eastern boundary of the region is not consistently defined by state agencies or those who call themselves "Western New Yorkers". Almost all so ...
and U.S. federal territory, resulting in the
Erie Triangle. This survey, during which he also made the first topographical study of the
Niagara River including the
Niagara Falls
Niagara Falls is a group of three waterfalls at the southern end of Niagara Gorge, spanning the Canada–United States border, border between the Provinces and territories of Canada, province of Ontario in Canada and the state of New York (s ...
, gained Ellicott a reputation for superb accuracy in surveys.
From 1791 to 1792, at the request of
Secretary of State Thomas Jefferson
Thomas Jefferson (, 1743July 4, 1826) was an American Founding Fathers of the United States, Founding Father and the third president of the United States from 1801 to 1809. He was the primary author of the United States Declaration of Indepe ...
, Ellicott worked under the direction of the three commissioners that President
George Washington
George Washington (, 1799) was a Founding Fathers of the United States, Founding Father and the first president of the United States, serving from 1789 to 1797. As commander of the Continental Army, Washington led Patriot (American Revoluti ...
had appointed, surveying the boundaries of the federal
Territory of Columbia, which would become the
District of Columbia
Washington, D.C., formally the District of Columbia and commonly known as Washington or D.C., is the capital city and Federal district of the United States, federal district of the United States. The city is on the Potomac River, across from ...
in 1801, containing the Federal City also then becoming known as
"Washington City". Ellicott began his survey in February 1791, just prior to the arrival of L'Enfant. He was assisted in this survey first by the free
African-American
African Americans, also known as Black Americans and formerly also called Afro-Americans, are an American racial and ethnic group that consists of Americans who have total or partial ancestry from any of the Black racial groups of Africa. ...
astronomer
Benjamin Banneker
Benjamin Banneker (November 9, 1731October 19, 1806) was an American Natural history, naturalist, mathematician, astronomer and almanac author. A Land tenure, landowner, he also worked as a surveying, surveyor and farmer.
Born in Baltimore Co ...
and then by Ellicott's brothers,
Joseph Ellicott and
Benjamin Ellicott. Ellicott's team put into place forty boundary stones approximately 1 mile (2 km) apart from each other that marked the borders of the Territory of Columbia of (see:
Boundary Markers of the Original District of Columbia). Most of these stones remain in their original positions. As
engraving
Engraving is the practice of incising a design on a hard, usually flat surface by cutting grooves into it with a Burin (engraving), burin. The result may be a decorated object in itself, as when silver, gold, steel, or Glass engraving, glass ar ...
s on many of the stones still show, Ellicott's team placed those that marked the southwestern /southeastern border with Virginia in 1791, and those that marked the northwestern / northeastern border with Maryland in 1792.
On January 1, 1793, Ellicott submitted to the three commissioners "a report of his first map of the four lines of experiment, showing a half mile on each side, including the district of territory, with a survey of the different waters within the territory". The
Library of Congress
The Library of Congress (LOC) is a research library in Washington, D.C., serving as the library and research service for the United States Congress and the ''de facto'' national library of the United States. It also administers Copyright law o ...
has attributed to 1793 Ellicott's earliest map of the Territory of Columbia that the Library holds within its collections.
During 1791–1792, Ellicott also surveyed the future city of Washington, which was located within a relatively small area at the center of the Territory of Columbia along the northern bank of the
Potomac River
The Potomac River () is in the Mid-Atlantic (United States), Mid-Atlantic region of the United States and flows from the Potomac Highlands in West Virginia to Chesapeake Bay in Maryland. It is long,U.S. Geological Survey. National Hydrography D ...
at the confluence with its Eastern Branch (known today as the
Anacostia River
The Anacostia River is a river in the Mid-Atlantic states, Mid Atlantic region of the United States. It flows from Prince George's County, Maryland, Prince George's County in Maryland into Washington, D.C., where it joins with the Washington Ch ...
). Ellicott also served under the Commissioners' supervision in this effort. He first worked with
Pierre (Peter) Charles L'Enfant, who had prepared the initial plans for the future capital city during the early months of 1791 and had presented one of these early plans to President Washington in August of that year (see
L'Enfant Plan).
During a contentious period in February 1792, Ellicott informed the Commissioners that L'Enfant had not been able to have the city plan engraved and printed as a map on paper and had refused to provide him with an original plan that L'Enfant was then holding.
Ellicott, with the aid of his brother,
Benjamin Ellicott, then revised the plan, despite L'Enfant's protests.
Ellicott stated in his letters that, although he was refused the original plan, he was familiar with L'Enfant's system and had many notes of the surveys that he had made himself. It is therefore possible that Ellicott recreated the plan. Ellicott's revisions realigned and straightened the diagonal
Massachusetts Avenue, eliminated five short other radial avenues and added two others, removed several plazas and straightened the borders of the future
Judiciary Square.
[(1]
Plan of the City of Washington
''in'
Retrieved May 2, 2008.
(2)
(3) Note: The last line of text within an oval in the upper left corner of the plan that this web page describes identifies the plan's author as "Peter Charles L'Enfant". The web page nevertheless identifies the author as "Pierre-Charles L'Enfant."
(4)
(5
and ttps://web.archive.org/web/20120111111905/http://www.nps.gov/history/nr/twhp/wwwlps/lessons/62wash/62images/62map1.pdf enlarged image''in'
official website of the U.S. National Park Service
Retrieved October 23, 2009
(6) The U.S. National Archives
National archives are the archives of a country. The concept evolved in various nations at the dawn of modernity based on the impact of nationalism upon bureaucratic processes of paperwork retention.
Conceptual development
From the Middle Ages i ...
holds a copy of "''Ellicott's engraved Plan superimposed on the Plan of L'Enfant showing the changes made in the engraved Plan under the direction of President Washington''". See "Scope & Contents" page of "Archival Description" for National Archives holding of "Miscellaneous Oversize Prints, Drawings and Posters of Projects Associated with the Commission of Fine Arts, compiled 1893–1950", ARC Identifier 518229/Local Identifier 66-M; Series from Record Group 66: Records of the Commission of Fine Arts, 1893–1981. Record of holding available from th
Archival Research Catalog (ARC) of the National Archives and Records Administration
under the ARC Identifier 518229. Retrieved February 3, 2009.
As the conflicts grew between the contending parties shortly thereafter, President Washington dismissed L'Enfant. Ellicott gave the first version of his own plan to James Thakara and John Valance of Philadelphia, who engraved, printed and published it. This version, printed in March 1792, was the first Washington city plan that received wide circulation.
After L'Enfant departed, Ellicott continued the city survey in accordance with his revised plan, several larger and more detailed versions of which were also engraved, published, printed and distributed. As a result, Ellicott's revisions became the basis for the capital city's future development. He left the City of Washington project in the summer of 1793, relieved to escape the political pressures surrounding that venture.
In 1794, Ellicott accepted a commission from the Commonwealth of Pennsylvania to plan the city of
Erie on the southeastern shore of
Lake Erie
Lake Erie ( ) is the fourth-largest lake by surface area of the five Great Lakes in North America and the eleventh-largest globally. It is the southernmost, shallowest, and smallest by volume of the Great Lakes and also has the shortest avera ...
, giving the Keystone State a future port on the
Great Lakes
The Great Lakes, also called the Great Lakes of North America, are a series of large interconnected freshwater lakes spanning the Canada–United States border. The five lakes are Lake Superior, Superior, Lake Michigan, Michigan, Lake Huron, H ...
and its increasing trade. He spent the next two years with this task, plotting a road from
Reading, Pennsylvania
Reading ( ; ) is a city in Berks County, Pennsylvania, United States, and its county seat. The city had a population of 95,112 at the 2020 United States census, 2020 census and is the List of municipalities in Pennsylvania, fourth-most populous ...
, to
Presqu'Isle, where the port city was to be built, and also supervising the construction of
Fort Erie.
In 1796, George Washington commissioned Ellicott as the U.S. representative on the commission for the survey of the southern border between the
Spanish territories along the
Gulf of Mexico
The Gulf of Mexico () is an oceanic basin and a marginal sea of the Atlantic Ocean, mostly surrounded by the North American continent. It is bounded on the northeast, north, and northwest by the Gulf Coast of the United States; on the southw ...
coast in
Florida
Florida ( ; ) is a U.S. state, state in the Southeastern United States, Southeastern region of the United States. It borders the Gulf of Mexico to the west, Alabama to the northwest, Georgia (U.S. state), Georgia to the north, the Atlantic ...
and the United States as negotiated in the
Treaty of San Lorenzo (also known as
Treaty of Madrid) of 1795. Ellicott travelled with a military escort from
Pittsburgh
Pittsburgh ( ) is a city in Allegheny County, Pennsylvania, United States, and its county seat. It is the List of municipalities in Pennsylvania#Municipalities, second-most populous city in Pennsylvania (after Philadelphia) and the List of Un ...
via the
Ohio
Ohio ( ) is a U.S. state, state in the Midwestern United States, Midwestern region of the United States. It borders Lake Erie to the north, Pennsylvania to the east, West Virginia to the southeast, Kentucky to the southwest, Indiana to the ...
and
Mississippi
Mississippi ( ) is a U.S. state, state in the Southeastern United States, Southeastern and Deep South regions of the United States. It borders Tennessee to the north, Alabama to the east, the Gulf of Mexico to the south, Louisiana to the s ...
rivers and worked together with Spanish commissioners, despite many difficulties, for the next four years. Ellicott's assistants on the survey were his son Andrew Ellicott Jr. and
David Gillespie. A Mississippian, possibly a descendant of
Isaac Guion, hinted at some of the difficulties Ellicott had in the unfamiliar political and social climate of pre-territorial Mississippi, writing, "Ellicott was a Pennsylvania quaker by birth and education; by some knowledge of natural history, astronomy and botany, he had recommended himself to Mr. Jefferson; but he was vain, weak, ambitious and obstinate, and wholly unfit for a position that demanded something more than civil engineering. Pope was a mere martinet, and easily became the tool of Ellicott."
Another "Ellicott's Line" from this survey, running along
latitude parallel 31° North, still defines the border today between the future states of
Alabama
Alabama ( ) is a U.S. state, state in the Southeastern United States, Southeastern and Deep South, Deep Southern regions of the United States. It borders Tennessee to the north, Georgia (U.S. state), Georgia to the east, Florida and the Gu ...
and Florida. One of his many stone markers for the boundary line, the
Ellicott Stone, is now located within a historical park about a mile south of
Bucks, Alabama.
In 1798, Ellicott complained to the government about four American generals receiving pensions from Spain, including General in Chief
James Wilkinson, raising the specter of treason, which later involved Vice President (during Jefferson's first term),
Aaron Burr. Ellicott showed considerable diplomatic talent during this joint project to bring it to a successful completion, and he presented his final report with maps to the government in 1800. (The ''Mapping'' episode of
Philip Morrison's miniseries ''The Ring Of Truth'' illustrates Ellicott's surveying methods from
Ellicott Hill in
Natchez,
Mississippi
Mississippi ( ) is a U.S. state, state in the Southeastern United States, Southeastern and Deep South regions of the United States. It borders Tennessee to the north, Alabama to the east, the Gulf of Mexico to the south, Louisiana to the s ...
, which is now another
National Historic Landmark
A National Historic Landmark (NHL) is a National Register of Historic Places property types, building, district, object, site, or structure that is officially recognized by the Federal government of the United States, United States government f ...
.)
The following
Adams administration, however, then refused to pay Ellicott for his work done in this survey, and even refused him access to his maps he had submitted with the report. He was forced to sell some of his possessions, including books from his library, in order to support his family. Finally the maps were released in 1803 under the subsequent Jefferson administration, and Ellicott published his ''Journal of Andrew Ellicott'' detailing the Florida survey, including the maps.
Jefferson, now president, then offered Ellicott the post of
Surveyor General of the Northwest Territory. However, Ellicott refused the appointment. His prior negative experiences with the government political administrations may have had something to do with this, but at the age of 49, he also wanted to spend more time with his family and feared that this new position might require him to travel too much.

Ellicott instead accepted an offer by Pennsylvania governor
Thomas McKean and took a position as Secretary of the Pennsylvania Land Office. The family moved to
Lancaster, Pennsylvania
Lancaster ( ) is a city in Lancaster County, Pennsylvania, United States, and its county seat. With a population of 58,039 at the 2020 United States census, 2020 census, it is the List of municipalities in Pennsylvania, eighth-most populous ci ...
, and Ellicott seemed content with a clerk's job that left him enough time for his own scientific and private interests and that provided a steady income for the family. The
Andrew Ellicott House, in Lancaster where he resided from 1801 to 1813, was listed on the
National Register of Historic Places
The National Register of Historic Places (NRHP) is the Federal government of the United States, United States federal government's official United States National Register of Historic Places listings, list of sites, buildings, structures, Hist ...
in 1972, by the
National Park Service
The National Park Service (NPS) is an List of federal agencies in the United States, agency of the Federal government of the United States, United States federal government, within the US Department of the Interior. The service manages all List ...
.
Also in 1803, President Jefferson engaged Ellicott as a mentor and teacher for
Meriwether Lewis
Meriwether Lewis (August 18, 1774 – October 11, 1809) was an American explorer, soldier, politician, and public administrator, best known for his role as the leader of the Lewis and Clark Expedition, also known as the Corps of Discovery, with ...
, one of the leaders of the
Lewis and Clark Expedition that was to start the following year. From April to May 1803, Lewis stayed at Ellicott's home and studied survey techniques, and Ellicott made many recommendations on the expedition's equipment and survey procedures that were later followed. The two men apparently got along well.
When
Simon Snyder followed McKean as governor of Pennsylvania, he fired Ellicott in 1809 due to political differences. A prominent supporter of Snyder was former General in Chief
James Wilkinson, one of the four generals that Ellicott had denounced eleven years earlier and had come under a cloud of treason, along with Vice President
Aaron Burr. Ellicott returned to private practice and was hired in February 1811 by
David B. Mitchell, then governor of
Georgia
Georgia most commonly refers to:
* Georgia (country), a country in the South Caucasus
* Georgia (U.S. state), a state in the southeastern United States
Georgia may also refer to:
People and fictional characters
* Georgia (name), a list of pe ...
, to re-survey the border between Georgia and
North Carolina
North Carolina ( ) is a U.S. state, state in the Southeastern United States, Southeastern region of the United States. It is bordered by Virginia to the north, the Atlantic Ocean to the east, South Carolina to the south, Georgia (U.S. stat ...
to settle a
border dispute between these two states. Although he started out in July, his expedition was delayed and had to work throughout the hard winter. Ellicott confirmed earlier findings that the border, which was supposed to follow
latitude 35°N, was several miles further south than the Georgians claimed. His report was not well received by the Georgian administration, who furthermore refused to pay his fees. Ellicott returned in July 1812 to Pennsylvania.
In 1813, Ellicott accepted a position as a professor for mathematics at the
United States Military Academy at West Point, and the family left Lancaster and moved to
West Point, New York
West Point is the oldest continuously occupied military post in the United States. Located on the Hudson River in New York (state), New York, General George Washington stationed his headquarters in West Point in the summer and fall of 1779 durin ...
. In 1817, Ellicott was again called upon to participate as astronomer in a field survey, namely a re-survey – agreed upon in the
Treaty of Ghent – of the
Collins–Valentine line. It was the last significant survey that he performed. Ellicott died three years later from a
stroke
Stroke is a medical condition in which poor cerebral circulation, blood flow to a part of the brain causes cell death. There are two main types of stroke: brain ischemia, ischemic, due to lack of blood flow, and intracranial hemorrhage, hemor ...
in his home at West Point.
In memoriam
Andrew Ellicott Park at the West Cornerstone, located in
Arlington County,
the City of Falls Church and
Fairfax County in
Northern Virginia
Northern Virginia, locally referred to as NOVA or NoVA, comprises several County (United States), counties and independent city (United States), independent cities in the Commonwealth (U.S. state), Commonwealth of Virginia in the United States. ...
at the original west corner of the District of Columbia, memorializes Ellicott.
Ellicott Circle and Ellicott Street in the District of Columbia also memorialize him.
[Coordinates of Ellicott Street in the District of Columbia: ]
Publications and archives
* Ellicott, Andrew, and
David Gillespie. n.d. Andrew Ellicott papers. Correspondence, maps, charts, and reports of astronomical observations chiefly concerning Ellicott's work in surveying the boundary between the U.S. and Florida under the San Lorenzo Treaty (1795) and also his surveys of the city of Washington, the boundary between Georgia and South Carolina, the town of Presque Isle (later Erie), Pa., and the boundary between the U.S. and Canada under the Treaty of Ghent (1814). Other subjects discussed are international politics, Indian affairs, and the Blount conspiracy (1797). Includes papers of Ellicott's assistant David Gillespie. Family correspondents include Ellicott's wife Sarah and his brother Joseph. Other correspondents include
Daniel Clark, Jr.,
William Dunbar,
Manuel Gayoso de Lemos,
David Gillespie,
Benjamin Hawkins,
Thomas Jefferson
Thomas Jefferson (, 1743July 4, 1826) was an American Founding Fathers of the United States, Founding Father and the third president of the United States from 1801 to 1809. He was the primary author of the United States Declaration of Indepe ...
,
James Madison
James Madison (June 28, 1836) was an American statesman, diplomat, and Founding Fathers of the United States, Founding Father who served as the fourth president of the United States from 1809 to 1817. Madison was popularly acclaimed as the ...
,
Stephen Minor,
Robert Patterson,
Timothy Pickering,
John Pitchlynn,
Winthrop Sargent,
Cornelius P. Van Ness, and
James Wilkinson. 925 items. 7 containers. 2 microfilm reels. 1.1 linear feet.
* Andrew Ellicott. 1818. "Astronomical Observations, &c. Communicated by Andrew Ellicott, Esq." Transactions of the American Philosophical Society, New Series, Vol. 1, (1818), pp. 93–101.
* United States,
Isaac Briggs, Andrew Ellicott, Albert Gallatin, John Garnett, F. R. Hassler, James Madison, Joshua John Moore, Robert Patterson, and Roger Chew Weightman. 1811. Message from the president of the U. States, transmitting a report of the secretary of the Treasury, on the execution of the act providing for the survey of the coast of the U. States.: February 4, 1811. Printed by order of the Senate of the United States. Washington City
.C. Printed by R.C. Weightman. President's message, addressed to the Senate, signed on p.
James Madison. Letter of transmittal from the Dept. of the Treasury signed on p
Albert Gallatin. Includes a circular letter from Albert Gallatin to Robert Patterson, Andrew Ellicott, F.R. Hassler, John Garnett,
Isaac Briggs, Joshua J. Moore and James Madison, outlining the broad scope of the proposed survey and requesting the name of "any person whom you might recommend as capable of acting in the different parts of the work," followed by the response of each.
* Andrew Ellicott. 1809. "A Short and Easy Rule for Finding the Equation for the Change of the Sun's Declination When Equal Altitudes Are Used to Regulate a Clock or Other Time Keeper. Communicated by Andrew Ellicott Esq." ''Transactions of the American Philosophical Society'', Vol. 6, (1809), pp. 26–28.
* Robert Patterson and Andrew Ellicott. 1809. "Improved Method of Projecting and Measuring Plane Angles by Mr. Robert Patterson Communicated by Mr. Andrew Ellicott." ''Transactions of the American Philosophical Society'', Vol. 6, (1809), pp. 29–32.
* Andrew Ellicott. 1809. "Astronomical Observations Made at Lancaster, Pennsylvania, Chiefly with a View to Ascertain the Longitude of That Borough, and as a Test of the Accuracy with Which the Longitude May Be Found by Lunar Observation; In a Letter from Andrew Ellicott to Robert Patterson." ''Transactions of the American Philosophical Society'', Vol. 6, (1809), pp. 61–69.
* Andrew Ellicott. 1809. "Observations of the Eclipse of the Sun, June 16th, 1806; Made at Lancaster." ''Transactions of the American Philosophical Society'', Vol. 6, (1809), pp. 255–260.
* Andrew Ellicott. 1809. "Continuation of the Astronomical Observations Made at Lancaster, in Pennsylvania." ''Transactions of the American Philosophical Society'', Vol. 6, (1809), pp. 233–235.
* Jose Joaquin de Ferrer, Andrew Ellicott, Julian Ortis de Canelas and M. Mechain. 1809. "The Geographical Position of Sundry Places in North America, and in the W. Indies, Calculated by J. J. de Ferrer." ''Transactions of the American Philosophical Society'', Vol. 6, (1809), pp. 221–232.
* Evans, Evan, Andrew Ellicott, and Oliver Evans. 1807. Patent cyder, or tobacco press. Philadelphia, Pa: s.n. A patent license. Title from caption of illustration; text begins: Explanation. A, the cheese of pumice, or hogshead of tobacco, &c. signed: Evan Evans. Testimonial signed and dated: Andrew Ellicott. Lancaster, Pennsylvania, June 2, 1806. Manufacturer's statement, dated "Mars works, Philadelphia, April 30, 1807" and signed: Oliver Evans. Illustration signed: F. Shallus engraver No. 80 South Front St. Philada. Printed on paper watermarked "W Young 1804" (Gravell 1054).
* Ellicott, Andrew. 1803. The journal of Andrew Ellicott, late commissioner on behalf of the United States during part of the year 1796, the years 1797, 1798, 1799, and part of the year 1800 for determining the boundary between the United States and the possessions of His Catholic Majesty in America, containing occasional remarks on the situation, soil, rivers, natural productions, and diseases of the different countries on the Mississippi, and gulf of Mexico, with six maps comprehending the Ohio, the Mississippi from the mouth of the Ohio to the gulf of Mexico, the whole of West Florida, and part of East Florida ; to which is added an appendix, containing all the astronomical observations made use of for determining the boundary ... likewise a great number of thermometrical observations. Philadelphia: Budd & Bartram, for Thomas Dobson.
* Andrew Ellicott. 1802. "Astronomical, and Thermometrical Observations, Made at the Confluence of the Mississippi, and Ohio Rivers." ''Transactions of the American Philosophical Society'', Vol. 5, (1802), pp. 162–202.
* Andrew Ellicott. 1802. "Astronomical, and Thermometrical Observations, Made on the Boundary between the United States and His Catholic Majesty." ''Transactions of the American Philosophical Society'', Vol. 5, (1802), pp. 203–311.
* Andrew Ellicott. 1799. "A Letter from Mr. Andrew Ellicott, to Mr. Robert Patterson. A Method of Calculating the Eccentric Anomaly of the Planets." ''Transactions of the American Philosophical Society'', Vol. 4, (1799), pp. 67–69.
* Andrew Ellicott. 1799. "Observations Made on the Old French Landing at Presqu' Isle, to Determine the Latitude of the Town of Erie. In a Letter from Andrew Ellicott, to Robert Patterson Secretary of the Society." Transactions of the American Philosophical Society, Vol. 4, (1799), pp. 231–232.
* Andrew Ellicott. 1799. "Miscellaneous Observations Relative to the Western Parts of Pennsylvania, Particularly Those in the Neighbourhood of Lake Erie." ''Transactions of the American Philosophical Society'', Vol. 4, (1799), pp. 224–230.
* Andrew Ellicott. 1799. "A Letter from Mr. Andrew Ellicott, to Robert Patterson; In Two Parts. Part First Contains a Number of Astronomical Observations. Part Second Contains the Theory and Method of Calculating the Aberration of the Stars, the Nutation of the Earth's Axis, and the Semiannual Equation." ''Transactions of the American Philosophical Society'', Vol. 4, (1799), pp. 32–66.
* Andrew Ellicott and R. Patterson. 1799. "Observations for Determining the Latitude and Longitude of the Town of Natchez. By Andrew Ellicott, Esq. Commissioner on the Part of the United States, for Running the Line of Demarkation between Them and the Spanish Territory. Communicated to the Society by R. Patterson." ''Transactions of the American Philosophical Society'', Vol. 4, (1799), pp. 447–451.
* United States, and Andrew Ellicott. 1798. Message from the President of the United States, accompanying a report to him from the secretary of state, and sundry documents relative to the affairs of the United States on the Mississippi the intercourse with the Indian nations, and the inexecution of the treaty between the United States and Spain. Philadelphia: Printed by W. Ross. Twenty-third January, 1798, ordered to lie on the table. Published by order of the House of Representatives.
* Andrew Ellicott. 1793. "Extract of a Letter from Andrew Ellicott, to David Rittenhouse, Esq. Dated at Pittsburg, November 5th 1787, Containing Observations Made at Lake-Erie, on That Singular Phenomenon, by Seamen Termed Looming." ''Transactions of the American Philosophical Society'', Vol. 3, (1793), pp. 62–63.
* Andrew Ellicott. 1793. "Accurate Determination of the Right Ascension and Declination of β Bootes, and the Pole Star: In a Letter from Mr. Andrew Ellicott to Mr. R. Patterson." ''Transactions of the American Philosophical Society'', Vol. 3, (1793), pp. 116–118.
* Ellicott, Andrew. 1792. Territory annexed to the State of Pennsylvania: containing two hundred and two thousand one hundred and eighty seven acres. Shows two sides of the stone boundary marker between Pennsylvania and New York.
* Ellicott, Andrew, and William Irvine. 1790. Plan of the town of
Waterford, Pennsylvania. Photostats of original manuscript map done ca. 1795 located in the Pennsylvania State Archives. Includes legend. Alternate title: A correct Plan of the Town of Waterford and out-lots. Relief shown by shading. Description: 1 map on 2 sheets: photocopies; 52 x 72 cm. Other Titles: Correct plan of the town of Waterford and out-lots.
* Ellicott, Andrew. 1787. Ellicott's Virginia, Maryland, and Pennsylvania almanack, for the year of our Lord, 1788; being leap-year, and the twelfth year of American independence. Containing the motions of the sun and moon, the true places and aspects of the planets, the rising and setting of the sun, and the rising, setting, southing, and age of the moon, &c. Likewise, the lunations, conjunctions, eclipses, judgment of the weather, rising and setting of most of the principal fixed stars, length of days, and Quakers yearly meetings; days for holding courts in Pennsylvania, Delaware, Maryland, and Virginia; several valuable physical receipts; and some useful tables, both curious and interesting; with the remarkable American occurrences, &c. &c. The whole comprising a great variety of matter, both useful and entertaining. Winchester: printed and sold by Bartgis & Willcocks, at their printing-office, where all manner of printing is executed with fidelity and dispatch. Also to be had at the English and German printing-office, in Frederick-Town, Maryland." The astronomical part of this work was calculated by that ingenious mathematician Andrew Ellicott, Esq; of this state."—Preface.
* Ellicott, Andrew. 1790. "Description of the Falls of Niagara". ''The Massachusetts Magazine, or, Monthly Museum of Knowledge and Rational Entertainment''. 2 (7). Pages 387–388.
See also
*
Clarksville, Mississippi, the last base Ellicott used to survey the 31st latitude
*
David Bates Douglass, son-in-law
*
History of Washington, D.C.
Notes
References
* Bedini, S. "Andrew Ellicott, Surveyor of the Wilderness", ''Surveying and Mapping'' (June 1976): 113–135.
* Crim, R. D.:
Andrew Ellicott and the North Georgia Boundary of 1811', paper submitted to the ACSM/FIG Conference in April 2002 in Washington, D.C. Retrieved August 10, 2005.
* Davis, N.M.: ', Lewis and Clark Trail Heritage Foundation, Philadelphia Chapter, 2001. Retrieved August 10, 2005.
* Davis, N.M.:
Andrew Ellicott and Meriwether Lewis'', Discovering Lewis & Clark, May 2005. Retrieved August 10, 2005.
*
*
* Nolan, A. (revised by Kerwin, P.)
''Andrew Ellicott: An Register of His Papers in the Library of Congress'' Manuscript Division, Library of Congress, Washington, D.C. 2003, ''in'' official website o
Retrieved February 13, 2009.
* Spies, G.C.:
Major Andrew Ellicott, Esq. — Colonial American Astronomical Surveyor, Patriot, Cartographer, Legislator, Scientific Instrument Maker, Boundary Commissioner & Professor of Mathematics', presented at the FIG XXII International Congress, Washington, D.C., April 19–26, 2002, ''in'' website o
International Federation of Surveyors, FIGRetrieved February 13, 2009.
* Toscano, P.:
Book Review: Andrew Ellicott, His Life and Letters', Professional Surveyor Magazine 17(6), September 1996.
Further reading
*
External links
* was one of Andrew Ellicott's teachers.
*.
*.
2009-10-25).
Article and portrait at "Discovering Lewis & Clark"
Andrew Ellicott: Early America's Preeminent Surveyor by Chas Langelan
Image of Andrew Ellicott, 1809by painter
Jacob Eichholtz of Lancaster, Pennsylvania.
A surveying instrumentof Andrew Ellicott, with images.
Ellicott's Moundhistorical marker
{{DEFAULTSORT:Ellicott, Andrew
History of Washington, D.C.
History of Lancaster, Pennsylvania
American surveyors
People from Bucks County, Pennsylvania
People from Lancaster, Pennsylvania
1754 births
1820 deaths
American Quakers
Members of the American Philosophical Society