Subject (Region)
- Alaska (1959- )8
- Florida8
- Hawaii (1959- )8
- United States8
- New Mexico Territory (1850-1912)7
- Pennsylvania7
- Texas7
- Vietnam7
- Alexandria6
- Annapolis, Maryland6
- Arkansas6
- Colombia6
- Hot Springs National Park (Arkansas)6
- Japan6
- New Mexico6
- New York6
- Oklahoma6
- Sequoia National Park (California)6
- Yellowstone National Park6
- Yosemite National Park (California)6