- Air pilots--United States.3
- Barnes, Pancho, 1901-1975.3
- Boats and boating.3
- Bombers.3
- Canals.3
- Children.3
- Curtis, Charles, 1860-1936.3
- Elder, Ruth, 1902-1977.3
- Flags--American.3
- Formation flying.3
- Harding, Warren G. (Warren Gamaliel), 1865-1923.3
- Havana (Cuba)--Description and travel.3
- Hoover, Herbert, 1874-1964.3
- Lockheed aircraft.3
- Locks (Hydraulic engineering)3
- Machinery.3
- Marching bands.3
- Military ceremonies, honors, and salutes.3
- New York (N.Y.)--Description and travel.3
- Nichols, Ruth, 1901-1960.3