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Subject (Region)
- Colorado[remove]14
- Nevada[remove]14
- California12
- Oregon12
- Idaho11
- Montana11
- South Dakota11
- Utah11
- Washington11
- Texas10
- Wyoming10
- Arizona9
- New Mexico9
- Alaska Territory (1912-1959)3
- Alaska, Department and District of (1867-1912)3
- Arizona Territory (1863-1912)3
- New Mexico Territory (1850-1912)3
- Alabama2
- Georgia2
- Maryland2