| 1 | Earl L. Sorensen | Goldfield, IA | | Aug 09 1996 |
| 2 | Earl L. Sorensen &/or J. Scott Phillips | Goldfield, IA | Jan 01 1999 | Jan 27 1999 |
| 3 | Heartland Horse Rescue | Des Moines, IA | Aug 09 2001 | Mar 13 2002 |
| 4 | Heartland Horse Rescue &/or Allan &/or Ruth Preston | Rosalie, NE | Aug 27 2001 | Mar 13 2002 |
| 5 | Allan &/or Ruth Preston | Rosalie, NE | Nov 30 2005 | Dec 06 2005 |
| 6 | Dean Knepp | Vevay, IN | Apr 04 2008 | Apr 10 2008 |
| 7 | Oba C. Herschberger | Sullivan, IL | Jul 16 2010 | Nov 15 2010 |
| 8 | James T. or James K. Ahart | Dow City, IA | Mar 18 2014 | Apr 25 2014 |
| 9 | Ivan S. King | Lykens, PA | Oct 26 2014 | Nov 17 2014 |
