Region
- ArizonaApache County1
- ArizonaBuckskin Mountains Region1
- ArizonaCastle Dome Mountains1
- ArizonaChiricahua National Monument1
- ArizonaCochise County4
- ArizonaCoconino County1
- ArizonaGrand Canyon National Park1
- ArizonaMohave County7
- ArizonaNavajo County1
- ArizonaPalisades Creek1
- ArizonaPedregosa Mountains Region1
- ArizonaRawhide Mountains Region1
- ArizonaTohono O'odham Reservation1
- ArizonaTucson Region1
- Arkansas1
- Atlantic Coast (U.S.)1
- Beaufort Sea2
- Bennington County (Vt.)1
- Bergen County (N.J.)1
- Berkshire County (Mass.)1