| Number | Name | Date | Kind |
|---|---|---|---|
| 1238679 | Jacob | Aug 1913 | |
| 1888200 | Olson | Nov 1932 |
| Entry |
|---|
| Arnold's Professional Fox Trapping, by Walter L. Arnold, Chapter 1, p. 5. |
| Hawbaker's Supreme Fox & Coyote Trapping Method, by S. Stanley Hawbaker & Son, copyright 1969, pp. 11, 28, 32, 39. |