« Previous
Next »
Subject (Region)
- California28
- Colorado19
- Nebraska16
- Kansas12
- Montana12
- New Mexico Territory (1850-1912)12
- Texas12
- Wyoming12
- New York11
- Oregon11
- South Dakota11
- Arizona Territory (1863-1912)10
- Arkansas River9
- Hawaii Territory (1898-1959)9
- Mississippi River9
- North Dakota9
- Utah9
- Washington9
- Alaska, Department and District of (1867-1912)8
- Kansas River (Kansas)8