Region
- Antigua and Barbuda1
- Appalachian Region4
- Appalachian Region, Southern3
- Arab countries6
- Arabian Peninsula2
- Arctic regions1
- Argentina7
- ArgentinaSanta Fe (Province)1
- Arizona8
- Arkansas13
- Arkansas Territory1
- Armenia1
- Armenia (Republic)1
- Asia49
- Asia, Central8
- Asia, Eastern1
- Atlanta (Ga.)2
- Atlantic Ocean Region1
- Augst (Switzerland)1
- Australasia2