- Alabama
- Arizona
- Arkansas
- California
- Colorado
- Connecticut
- Dakota Territory
- Delaware
- District of Columbia
- Florida
- Idaho
- Illinois
- Indiana
- Iowa
- Louisiana
- Maine
- Maryland
- Massachusetts
- Michigan
- Mississippi
- Montana
- Nebraska
- Nevada
- New Hampshire
- New Jersey
- New Mexico
- Ohio
- Oregon
- Rhode Island
- South Carolina
- Utah
- Vemont
- Washington
- Wisconsin
- Wyoming
I'll have to give it a try on some of my brick walls. Unfortunately two of them were probably in Missouri in 1870, so I won't get too creative on searching for them until Missouri is added to the list of searchable states.
