| Case Name | Citation ▲ | Year | Distance from slave case(s) | Law Type | Jurisdiction |
|---|---|---|---|---|---|
| Niles v. Gray | 12 Ohio St. 320 | 1861 | 1 | Ohio | |
| Grayson v. State | 12 Okla. Crim. 226 | 1916 | 1 | Oklahoma | |
| Bell v. State | 12 Okla. Crim. 453 | 1916 | 1 | Oklahoma | |
| Specht v. Allen | 12 Or. 117 | 1885 | 1 | Oregon | |
| Phipps v. Kelly | 12 Or. 213 | 1885 | 1 | Oregon | |
| Gee v. Culver | 12 Or. 228 | 1883 | 1 | Oregon | |
| McIntyre v. Kamm | 12 Or. 253 | 1885 | 1 | Oregon | |
| Parker v. Metzger | 12 Or. 407 | 1885 | 1 | Oregon | |
| Stewart v. McClung | 12 Or. 431 | 1885 | 1 | Oregon | |
| Dawson v. Coffey | 12 Or. 513 | 1885 | 1 | Oregon | |
| Marple v. Myers | 12 Pa. 122 | 1849 | 1 | Pennsylvania | |
| McLaughlin v. Shields | 12 Pa. 283 | 1849 | 1 | Pennsylvania | |
| Ferris v. Henderson | 12 Pa. 49 | 1849 | 0 | Claim for services rendered | SC of PA. |
| Mendenhall v. Mendenhall | 12 Pa. Super. 290 | 1900 | 1 | Pennsylvania | |
| Sheehan v. Rosen | 12 Pa. Super. 298 | 1900 | 1 | Pennsylvania | |
| Louchheim v. Clawson Printing & Weighing Co. | 12 Pa. Super. 55 | 1899 | 1 | Pennsylvania | |
| Squires v. Howell | 12 Pa. Super. 8 | 1899 | 1 | Pennsylvania | |
| Carroll v. Sheehan | 12 R.I. 218 | 1878 | 1 | Rhode Island | |
| Goddard v. Brown | 12 R.I. 31 | 1878 | 1 | Rhode Island | |
| Whipple v. Wanskuck Co. | 12 R.I. 321 | 1879 | 1 | Rhode Island |