Subject
- World War, 1939-194594
- World maps93
- Historical geography89
- Cartes84
- Residential real estate83
- Real estate development72
- Description and travel70
- Discovery and exploration66
- Indians of North America65
- Navigation50
- Discoveries in geography49
- Military campaigns49
- Oil wells47
- World War, 1914-191844
- Streets43
- Forest reserves42
- Land use42
- Transportation42
- Oil fields40
- Outdoor recreation40
