Subject
- Dive bombers.1
- Farmers.1
- Farms.1
- Folk music.1
- Forests and forestry -- United States.1
- Glenn L. Martin Company.1
- Helicopters.1
- Hoover, Herbert, 1874-1964.1
- Horse racing.1
- Horsemanship.1
- International cooperation.1
- International relations.1
- Johnson, Martin, 1884-1937.1
- Lexington (Aircraft carrier : 1927-1942)1
- Lexington Class (Aircraft carriers)1
- Machines in action.1
- Marines.1
- McNutt, Paul V. (Paul Vories), 1891-1955.1
- Military art and science.1
- Milling machinery.1