United States Post Office-Main Branch is a historic

post office A post office is a public facility and a retailer that provides mail services, such as accepting letters and parcels, providing post office boxes, and selling postage stamps, packaging, and stationery. Post offices may offer additional serv ...

building located in the University City neighborhood of

Philadelphia, Pennsylvania Philadelphia, often called Philly, is the largest city in the Commonwealth of Pennsylvania, the sixth-largest city in the U.S., the second-largest city in both the Northeast megalopolis and Mid-Atlantic regions after New York City. Sinc ...

. It is located across from

Amtrak The National Railroad Passenger Corporation, Trade name, doing business as Amtrak () , is the national Passenger train, passenger railroad company of the United States. It operates inter-city rail service in 46 of the 48 contiguous United Stat ...

30th Street Station 3 (three) is a number, numeral and digit. It is the natural number following 2 and preceding 4, and is the smallest odd prime number and the only prime preceding a square number. It has religious or cultural significance in many societie ...

. It was built between 1931 and 1935, and is a six-story, steel frame building clad in

limestone Limestone ( calcium carbonate ) is a type of carbonate sedimentary rock which is the main source of the material lime. It is composed mostly of the minerals calcite and aragonite, which are different crystal forms of . Limestone forms whe ...

in the

Art Deco Art Deco, short for the French ''Arts Décoratifs'', and sometimes just called Deco, is a style of visual arts, architecture, and product design, that first appeared in France in the 1910s (just before World War I), and flourished in the Unite ...

-style. It measures wide and long. ''Note:'' This includes The world's first scheduled rotorcraft airmail service served the Post Office. The building had been designed with a flat roof with underfloor heating to prevent snow and ice. It also had take-off ramps, radio and weather reporting equipment, and fuelling and maintenance facilities. The operation, flown by

Kellett KD-1 The Kellett KD-1 was a 1930s American autogyro built by the Kellett Autogiro Company. It had the distinction of being the first practical rotary-wing aircraft used by the United States Army and inaugurated the first scheduled air-mail service us ...

autogyro An autogyro (from Greek and , "self-turning"), also known as a ''gyroplane'', is a type of rotorcraft that uses an unpowered rotor in free autorotation to develop lift. Forward thrust is provided independently, by an engine-driven propeller. Whi ...

s of

Eastern Air Lines Eastern Air Lines, also colloquially known as Eastern, was a major United States airline from 1926 to 1991. Before its dissolution, it was headquartered at Miami International Airport in an unincorporated area of Miami-Dade County, Florida. Ea ...

, started on 6 July 1939. The contract for the route, AM2001, involved five flights per day, six days a week, between the Post Office and

Camden Central Airport Camden Central Airport (sometimes called Central Airport, Camden) was an airport in Pennsauken Township, Camden County, New Jersey, United States. It had its peak of activity in the 1930s, serving as the main airport for the neighboring city o ...

, away in

Camden, New Jersey Camden is a city in and the county seat of Camden County, in the U.S. state of New Jersey. Camden is part of the Delaware Valley metropolitan area and is located directly across the Delaware River from Philadelphia, Pennsylvania. At the 2020 ...

. The main pilot was

Johnny Miller John Laurence Miller (born April 29, 1947) is an American former professional golfer. He was one of the top players in the world during the mid-1970s. He was the first to shoot 63 in a major championship to win the 1973 U.S. Open, and he ra ...

. The contract ended a year later, with 2,634 flights completed, representing 85% of all scheduled flights – a very impressive statistic for the time. However, the contract was not renewed. The facility closed on September 29, 2008 when main distribution center activities moved to a new facility adjacent to the

Philadelphia International Airport Philadelphia International Airport is the primary airport serving Philadelphia, Pennsylvania. The airport served 19.6 million passengers annually in 2021, making it the 21st busiest airport in the United States. The airport is located from t ...

. A new retail location was opened nearby at 3000 Chestnut Street. The building has been converted into office space, including the regional headquarters of the

IRS The Internal Revenue Service (IRS) is the revenue service for the United States federal government, which is responsible for collecting U.S. federal taxes and administering the Internal Revenue Code, the main body of the federal statutory tax ...

. It was added to the

National Register of Historic Places The National Register of Historic Places (NRHP) is the United States federal government's official list of districts, sites, buildings, structures and objects deemed worthy of preservation for their historical significance or "great artistic v ...

in 2005.

References

Post office buildings on the National Register of Historic Places in Pennsylvania Government buildings on the National Register of Historic Places in Philadelphia Art Deco architecture in Pennsylvania Government buildings completed in 1935 University City, Philadelphia {{PhiladelphiaPA-NRHP-stub