United Office Building was created in 1929.
Church Office Building was created in 1972.
Central Office Building was created in 1906.
Failing Office Building was created in 1913.
Neutra Office Building was created in 1950.
New Executive Office Building was created in 1969.
Burden Ironworks Office Building was created in 1880.
Eisenhower Executive Office Building was created in 1888.
Cummins Corporate Office Building was created in 1983.
Plymouth Post Office Building was created in 1913.
Moriah Town Office Building was created in 1875.
Dirksen Senate Office Building was created in 1958.
Pittsburgh State Office Building was created in 1958.