| Ronald N. Peterson |
KY United States |
| Ron & Pat Petitt |
CA United States |
| Ron & Pat Petitt |
CA United States |
| Ann & Robert Petrasek |
MD United States |
| Robin Ann Petrasek |
MD United States |
| Dr. Wolfram Pfeiffer |
Germany |
| Gary & Lisa Phillips |
CO United States |
| Phillips Pharms |
United States |
| Piber State Stud |
Unknown |
| Dr Ewald F Pigisch |
Germany |
| Judith Pineault |
ON Canada |
| Karen Piper |
CA United States |
| Cathy Pirolo |
WA United States |
| Christopher Kim Playle & Claude Diotte |
QU Canada |
| Janow Podlaski |
Poland |
| Brenda Podolski |
United States |
| Donna Poe |
VA United States |
| Smordwa |
Poland |
| U.S. Government, Pomona |
CA United States |
| Shenandoah Pony Stud |
United States |
| Richard Porter |
KY United States |
| Kathryn Porterfield |
OR United States |
| Posadowo |
Poland |
| Linda Posch |
GA United States |
| Lonnie Poteet |
WA United States |