The Petroleum Building is a 50-meter/10-floor building at 420 South Boulder in

Tulsa, Oklahoma Tulsa ( ) is the List of municipalities in Oklahoma, second-most-populous city in the U.S. state, state of Oklahoma, after Oklahoma City, and the List of United States cities by population, 48th-most-populous city in the United States. The po ...

. It was built in 1921, and is a

steel Steel is an alloy of iron and carbon that demonstrates improved mechanical properties compared to the pure form of iron. Due to steel's high Young's modulus, elastic modulus, Yield (engineering), yield strength, Fracture, fracture strength a ...

and reinforced

concrete Concrete is a composite material composed of aggregate bound together with a fluid cement that cures to a solid over time. It is the second-most-used substance (after water), the most–widely used building material, and the most-manufactur ...

structure faced with buff

brick A brick is a type of construction material used to build walls, pavements and other elements in masonry construction. Properly, the term ''brick'' denotes a unit primarily composed of clay. But is now also used informally to denote building un ...

. The name was given because most of the early tenants were associated with the

petroleum industry The petroleum industry, also known as the oil industry, includes the global processes of hydrocarbon exploration, exploration, extraction of petroleum, extraction, oil refinery, refining, Petroleum transport, transportation (often by oil tankers ...

. Later, it housed the Mayo Brothers Furniture Company."Best of Tulsa - Petroleum Building"
. Accessed March 10, 2011. It was identified as one of the supporting structures during the creation of the

Oil Capital Historic District The Oil Capital Historic District (OCHD) is an area in downtown Tulsa, Oklahoma that commemorates the success of the oil business in Tulsa during the early 20th century. During this period, Tulsa was widely known as "The Oil Capital of the Wo ...

.National Register of Historic Places Registration Form for Oil Capital Historic District.
Retrieved November 26, 2014. The simple facade is said to be typical of the pre-Art Deco designs used in many

downtown Tulsa Downtown Tulsa is an area of approximately surrounded by an inner-dispersal loop created by Interstate 244, U.S. Route 64 in Oklahoma, US 64 and U.S. Route 75 in Oklahoma, US 75. The area serves as Tulsa, Oklahoma, Tulsa's financial and business ...

buildings.NRHP Application: Petroleum Building.
U.S. Department of the Interior. National Park Service. June 1978. Retrieved November 19, 2014.

References

Commercial buildings on the National Register of Historic Places in Oklahoma Commercial buildings completed in 1921 Buildings and structures in Tulsa, Oklahoma National Register of Historic Places in Tulsa, Oklahoma {{Oklahoma-NRHP-stub