| Owner | Count | 1.
| Peterson, Jeanne Gabriel, Mount Vernon, Iowa | 1 | 2.
| Peterson, Jerome, Mr & Mrs, | 1 | 3.
| Peterson, Norman, Mr & Mrs, Rancho Palos Verdes, California | 1 | 4.
| Peterson, Oscar W., Mrs, Owatonna, Minnesota | 1 | 5.
| Peterson, Penelope Parker, Flat Rock, North Carolina | 1 | 6.
| Peterson, Pete, Powder River, Wyoming | 5 | 7.
| Peterson, Walter F., Dubuque, Iowa | 1 | 8.
| Petit Jean State Park, Winrock, Arkansas | 3 | 9.
| Petitpren, Lyle, Mount Clemens, Michigan | 29 | 10.
| Peto, R., Mrs, London, England | 1 |
|