A law library is a
special library used by
law students,
lawyer
A lawyer is a person who practices law. The role of a lawyer varies greatly across different legal jurisdictions. A lawyer can be classified as an advocate, attorney, barrister, canon lawyer, civil law notary, counsel, counselor, solici ...
s,
judges and their
law clerks, historians and other scholars of
legal history
Legal history or the history of law is the study of how law has Sociocultural evolution, evolved and why it has changed. Legal history is closely connected to the development of civilisations and operates in the wider context of social history. C ...
in order to
research the law. Law libraries are also used by people who draft or advocate for new laws, e.g.
legislator
A legislator (also known as a deputy or lawmaker) is a person who writes and passes laws, especially someone who is a member of a legislature. Legislators are often elected by the people of the state. Legislatures may be supra-national (for e ...
s and others who work in
state government,
local government
Local government is a generic term for the lowest tiers of public administration within a particular sovereign state. This particular usage of the word government refers specifically to a level of administration that is both geographically-lo ...
, and
legislative counsel
A legislature is an assembly with the authority to make laws for a political entity such as a country or city. They are often contrasted with the executive and judicial powers of government.
Laws enacted by legislatures are usually known as ...
offices or the U.S.
Office of Law Revision Counsel and
lobbying
In politics, lobbying, persuasion or interest representation is the act of lawfully attempting to influence the actions, policies, or decisions of government officials, most often legislators or members of regulatory agencies. Lobbying, whic ...
professionals. Self-represented, or ''
pro se'', litigants (parties to a civil
lawsuit
-
A lawsuit is a proceeding by a party or parties against another in the civil court of law. The archaic term "suit in law" is found in only a small number of laws still in effect today. The term "lawsuit" is used in reference to a civil actio ...
or criminal
defendants who do not have a licensed
attorney
Attorney may refer to:
* Lawyer
** Attorney at law, in some jurisdictions
* Attorney, one who has power of attorney
* ''The Attorney'', a 2013 South Korean film
See also
* Attorney general, the principal legal officer of (or advisor to) a gove ...
representing them) also use law libraries.
A law library may contain print,
computer assisted legal research, and
microform collections of laws in force,
session laws,
superseded laws,
foreign and
international law
International law (also known as public international law and the law of nations) is the set of rules, norms, and standards generally recognized as binding between states. It establishes normative guidelines and a common conceptual framework for ...
, and other research resources, e.g.
continuing legal education resources and legal encyclopedias (e.g. ''
Corpus Juris Secundum'' among others),
legal treatises, and
legal history
Legal history or the history of law is the study of how law has Sociocultural evolution, evolved and why it has changed. Legal history is closely connected to the development of civilisations and operates in the wider context of social history. C ...
. A law library may also have
law librarians who help legal researchers navigate law library collections and who teach
legal research. Some law libraries serve scholars from around the world, e.g.
Institute of Advanced Legal Studies in London and the
New York City Bar Association Law Library.
Law libraries in the
United States
The United States of America (U.S.A. or USA), commonly known as the United States (U.S. or US) or America, is a country primarily located in North America. It consists of 50 U.S. state, states, a Washington, D.C., federal district, five ma ...
are usually classified as a type of
special library because of their focus on providing specialized resources, as well as their specialized and limited user base.
Most
law school
A law school (also known as a law centre or college of law) is an institution specializing in legal education, usually involved as part of a process for becoming a lawyer within a given jurisdiction.
Law degrees Argentina
In Argentina, ...
s around the world have a law library, or in some
universities, at least a section of the
university library devoted to law. In the United States, law school libraries may be subject to accreditation review by th
American Bar Association Standards of Legal Education
Law libraries may be found in courts (e.g.
judge's chambers), legislatures (e.g. the
Law Library of Congress),
prison libraries
A prison, also known as a jail, gaol (dated, English language in England, standard English, Australian English, Australian, and Huron Historic Gaol, historically in Canada), penitentiary (American English and Canadian English), detention cen ...
, government departments, private
law firm
A law firm is a business entity formed by one or more lawyers to engage in the practice of law. The primary service rendered by a law firm is to advise clients (individuals or corporations) about their legal rights and responsibilities, and to ...
s, and
barristers' chambers.
England and Commonwealth countries

Outside of the United States, the largest and most extensive law libraries are those found in countries that follow the English
common law
In law, common law (also known as judicial precedent, judge-made law, or case law) is the body of law created by judges and similar quasi-judicial tribunals by virtue of being stated in written opinions."The common law is not a brooding omniprese ...
which spread throughout the world with the expansion of the
British Empire
The British Empire was composed of the dominions, colonies, protectorates, mandates, and other territories ruled or administered by the United Kingdom and its predecessor states. It began with the overseas possessions and trading post ...
. These countries include but are not limited to
Australia,
Canada
Canada is a country in North America. Its ten provinces and three territories extend from the Atlantic Ocean to the Pacific Ocean and northward into the Arctic Ocean, covering over , making it the world's second-largest country by tota ...
,
India
India, officially the Republic of India ( Hindi: ), is a country in South Asia. It is the seventh-largest country by area, the second-most populous country, and the most populous democracy in the world. Bounded by the Indian Ocean on the ...
, and
New Zealand
New Zealand ( mi, Aotearoa ) is an island country in the southwestern Pacific Ocean. It consists of two main landmasses—the North Island () and the South Island ()—and over 700 List of islands of New Zealand, smaller islands. It is the ...
. Law libraries in these countries can be found in law schools, courts, government, private law firms, and barristers chambers.
The largest law library in the
United Kingdom
The United Kingdom of Great Britain and Northern Ireland, commonly known as the United Kingdom (UK) or Britain, is a country in Europe, off the north-western coast of the European mainland, continental mainland. It comprises England, Scotlan ...
is the
Bodleian Law Library with a collection of over 550,000 volumes.
Outside of England, the largest law library in the
Commonwealth of Nations
The Commonwealth of Nations, simply referred to as the Commonwealth, is a political association of 56 member states, the vast majority of which are former territories of the British Empire. The chief institutions of the organisation are the ...
is
Osgoode Hall Law School's at
York University
York University (french: Université York), also known as YorkU or simply YU, is a public research university in Toronto, Ontario, Canada. It is Canada's fourth-largest university, and it has approximately 55,700 students, 7,000 faculty and staf ...
in Canada, with more than 500,000 print volumes. The earliest common law law libraries were founded in the late 15th century in London and include
Gray's Inn and
Lincoln's Inn.
Special collections of legal literature in university and research libraries in England include the Viner collection at the
Bodleian Library, University of Oxford (the personal library of
Charles Viner
Charles William Viner A.M., Ph.D., (1812Birch, Brian. ''Biographies of Philatelists and Dealers''. 9th edition. Standish, Wigan: 2008, p.1468. – 14 March 1906) was a British philatelist who was a founding member of the ''Philatelic Society, ...
, bequeathed to the Radcliffe Library in 1756); a collection of English legal manuscripts at
Cambridge University Library; the
Smuts Smuts is an Afrikaans surname most commonly associated with Jan Smuts (1870–1950), a South African statesman, military leader and prime minister of the Union of South Africa. Other notable people with the surname include:
* Barbara Smuts, Americ ...
collection on Commonwealth law, the
Maitland collection on legal history, and the Clark, Roby and Buckland collections relating to
Roman law
Roman law is the legal system of ancient Rome, including the legal developments spanning over a thousand years of jurisprudence, from the Twelve Tables (c. 449 BC), to the '' Corpus Juris Civilis'' (AD 529) ordered by Eastern Roman emperor Jus ...
, all in the Squire Law Library, a department of the Cambridge University Library; and the Slade-Baker collection of correspondence accumulated by the Slade-Baker firm of solicitors in Bewdley which is in
Birmingham University Library.
United States
Generally
The largest law libraries in the world are found in the
United States
The United States of America (U.S.A. or USA), commonly known as the United States (U.S. or US) or America, is a country primarily located in North America. It consists of 50 U.S. state, states, a Washington, D.C., federal district, five ma ...
. The world's largest law library is the
Law Library of Congress, which holds over 2.9 million volumes. The world's largest academic law library is the library of
Harvard Law School, which holds over 2 million volumes. By way of contrast, the largest law library in the
United Kingdom
The United Kingdom of Great Britain and Northern Ireland, commonly known as the United Kingdom (UK) or Britain, is a country in Europe, off the north-western coast of the European mainland, continental mainland. It comprises England, Scotlan ...
is the
Bodleian Law Library with a collection of over 550,000 volumes.
Broadly speaking, there are three categories of law libraries in the United States: academic, public, and private. Every law school accredited by the American Bar Association houses a law library. Public law libraries are available in many states, often in the local
courthouses. Certain larger
law firm
A law firm is a business entity formed by one or more lawyers to engage in the practice of law. The primary service rendered by a law firm is to advise clients (individuals or corporations) about their legal rights and responsibilities, and to ...
s maintain a private library for their own attorneys, but many firms in
college towns and larger cities with
universities simply dispatch their attorneys to local law schools to do legal research.
A typical law library holds a large number of works not seen in other libraries, including a full set of ''
United States Reports'', one or both of the unofficial
U.S. Supreme Court reporters, the West
National Reporter System, the
West American Digest System, official reporters from various states, the ''
Federal Register
The ''Federal Register'' (FR or sometimes Fed. Reg.) is the official journal of the federal government of the United States that contains government agency rules, proposed rules, and public notices. It is published every weekday, except on fed ...
'', volumes of ''
American Jurisprudence'', bound volumes containing issues of prominent
law review
A law review or law journal is a scholarly journal or publication that focuses on legal issues. A law review is a type of legal periodical. Law reviews are a source of research, imbedded with analyzed and referenced legal topics; they also pr ...
s from around the country, federal and state
statutes and
regulation
Regulation is the management of complex systems according to a set of rules and trends. In systems theory, these types of rules exist in various fields of biology
Biology is the scientific study of life. It is a natural science with a ...
s (such as the
United States Code
In the law of the United States, the Code of Laws of the United States of America (variously abbreviated to Code of Laws of the United States, United States Code, U.S. Code, U.S.C., or USC) is the official compilation and codification of th ...
and
Code of Federal Regulations
In the law of the United States, the ''Code of Federal Regulations'' (''CFR'') is the codification of the general and permanent regulations promulgated by the executive departments and agencies of the federal government of the United States. ...
), and a variety of
treatises, encyclopedias,
looseleaf services, and practice guides.
Large law libraries may contain many additional materials covering topics such as:
legal education,
research
Research is "creative and systematic work undertaken to increase the stock of knowledge". It involves the collection, organization and analysis of evidence to increase understanding of a topic, characterized by a particular attentiveness t ...
, and
writing
Writing is a medium of human communication which involves the representation of a language through a system of physically Epigraphy, inscribed, Printing press, mechanically transferred, or Word processor, digitally represented Symbols (semiot ...
; the history of the American legal system and profession; the history behind certain high-profile cases; techniques of oral argument; and the legislative history of important federal and state statutes.
Smaller law libraries usually hold, at a minimum, one unofficial Supreme Court reporter, selected West national reporters and digests specific to the state in which the library is located, the United States Code, a few state-specific reporters and statutory compilations (if they exist for a particular state), and several state-specific treatises and practice guides. Most academic law library websites also contain legal research guidelines on numerous legal topics that are available to the public.
In recent years, the advent of online legal research outlets such as
FindLaw,
Westlaw,
LexisNexis,
Bloomberg Law, and
HeinOnline (or in Canada,
CanLII) has reduced the need for some types of printed volumes like reporters and statutory compilations. A number of law libraries have therefore reduced the availability of printed works that can easily be found on the Internet, and have increased their own Internet availability. On the other hand, some university law libraries retain extensive historical collections going back to the earliest English reports. Many law libraries also participate in the
Federal Depository Library Program
The Federal Depository Library Program (FDLP) is a government program created to make U.S. federal government publications available to the public at no cost. As of April 2021, there are 1,114 depository libraries in the United States and its t ...
which provides access to government information and documents to the public at no cost. This is particularly true of law school libraries as the library at any accredited law school is automatically eligible to become a depository library under the Program.
Most law libraries are members of the
American Association of Law Libraries (AALL). As of 2010, the association has over 5,000 member libraries. Another important association for law libraries is the
Special Libraries Association.
Academic law libraries
Every accredited American law school is required by the
American Bar Association
The American Bar Association (ABA) is a voluntary bar association of lawyers and law students, which is not specific to any jurisdiction in the United States. Founded in 1878, the ABA's most important stated activities are the setting of acad ...
to have a law library meeting certain minimum specifications with respect to quantity and quality of materials available.
Some law school libraries are kept in the same building as the general library, but many are either in the law school's building, or in a separate facility altogether.
As of 2015, the American Bar Association has propounded rules requiring each law school's law library to include among its holdings the following "core collection":
# all reported federal court decisions and reported decisions of the highest appellate court of each state;
# all federal codes and session laws, and at least one current annotated code for each state;
# all current published treaties and international agreements of the United States;
# all current published regulations (codified and uncodified) of the federal government and the codified regulations of the state in which the law school is located;
# those federal and state administrative decisions appropriate to the programs of the law school;
# U.S. Congressional materials appropriate to the programs of the law school;
# significant secondary works necessary to support the programs of the law school, and
# those tools, such as citators and periodical indexes, necessary to identify primary and secondary legal information and update primary legal information.
The ABA also requires a library's collection to meet the academic needs of the students and research and teaching needs of the faculty.
The ABA further sets forth additional requirements, including the requirement that the law library have a full-time director who holds a law degree and a degree in library or information science or equivalent with extensive experience in librarianship. The ABA also requires that the library have sufficient staff and facilities to attend to the needs of the institution.
Many academic law librarians participate in the AALL and specifically the Academic Law Libraries special interest section.
In addition to providing library services, many "dual degree" (J.D. / M.L.I.S.) law librarians teach legal research to law students.
Public law libraries
Public law libraries in the United States exist in many states and in federal jurisdictions, such as
federal agencies; many
courthouses also have a law library. Public law libraries are publicly funded but may or may not be open to the public.
U.S. federal agencies have libraries and librarians who serve the legal research and other research needs of their employees and contractors, but these libraries are not open to the general public without an appointment. The Law Librarians' Society of Washington D.C. has a Special Interest Section, Federal Law Librarians. Some state and federal agencies maintain law libraries focusing on their regulatory areas. One prominent example is the
United States Environmental Protection Agency
The Environmental Protection Agency (EPA) is an independent executive agency of the United States federal government tasked with environmental protection matters. President Richard Nixon proposed the establishment of EPA on July 9, 1970; it ...
, which runs a
National Library Network providing access to specialized material to agency researchers and the general public.
The
United States Supreme Court Building
The Supreme Court Building houses the Supreme Court of the United States. Also referred to as "The Marble Palace," the building serves as the official workplace of the chief justice of the United States and the eight associate justices of th ...
houses one of the most extensive federal public law libraries in the world, rivaled by the
Law Library of Congress. Strictly speaking, neither the U.S. Supreme Court Library nor the
Law Library of Congress is a public access law library; both, however, are government libraries funded by taxpayers, and accountable to the
U.S. Supreme Court or to the
U.S. Congress respectively. The Law Library of Congress does serve the public through various means, e.g. websites, social media services, and a physically accessible library.
New York and
California
California is a state in the Western United States, located along the Pacific Coast. With nearly 39.2million residents across a total area of approximately , it is the most populous U.S. state and the 3rd largest by area. It is also the ...
are examples of states that have statutes requiring all their counties to maintain a public law library. While New York public access law libraries have remained relatively small, the LA Law Library in
Los Angeles County
Los Angeles County, officially the County of Los Angeles, and sometimes abbreviated as L.A. County, is the most populous county in the United States and in the U.S. state of California, with 9,861,224 residents estimated as of 2022. It is th ...
is currently second in size behind the Law Library of Congress among U.S. public law libraries, with a collection at just under 1 million volumes, not including digital resources. Public law libraries are available, and in some cases are required, to offer law library and legal research services to the legal community consisting of legislators and other public officials, judges, and lawyers and to the general public, students, and to self-represented litigants. These public law libraries may be affiliated state or local courts. Some academic law libraries provide public access as well, especially in
public universities.
Many public law librarians are members of the
American Association of Law Libraries professional association, and specifically in the Government Law Libraries special interest section.
Public law librarians who have written books about providing legal research services to the public and managing public law libraries include Anthony Aycock, Roy Balleste, Joel Fishman, Paul D. Healey, Ellyssa Kroski, Laurie Selwyn, and Virginia Tucker.
Private law libraries
Some law firms and corporate legal departments maintain in-house libraries, the size and content of which vary depending on the practice area and needs of the organization. These libraries would rarely, if ever, be available to individuals outside the organization, although in some locales law firm librarians have informal lending agreements between firms. Private law libraries often participate in the AALL's Private Law Librarians & Information Professionals Special Interest Section.
See also
*
List of sources of law in the United States
*
American Association of Law Libraries
References
{{authority control
Legal research