- Biplanes--Piloting.1
- Buildings.1
- Cable cars (Streetcars)1
- Carlyle House (Alexandria, Va.)1
- Coolidge, Calvin, 1872-1933.1
- Coolidge, Grace Goodhue, 1879-1957.1
- Costume.1
- Denby, Edwin, 1870-1929.1
- Elevators.1
- Funeral rites and ceremonies--United States.1
- Hoover, Herbert, 1874-1964.1
- Hoover, Lou Henry, 1874-1944.1
- Ickes, Harold L. (Harold LeClair), 1874-1952.1
- Lincoln, Abraham, 1809-1865.1
- Megaphones.1
- Modern dance.1
- Monuments--Conservation and restoration.1
- National monuments.1
- Pennsylvania Avenue (Washington, D.C.).1
- Pitcairn, Harold F., 1897-1960.1