| Powell & Co. | F. J. | Hill View Farm, Aldersyde | 6AO and 13D, 15E | 1962 |
| Powell & Co. | W. T. & J. | Talbot and Sunnycrest, Pintharuka and Canna | XP8 and 114B, 5A | 1962 |
| Powell & Son | N. F. & J. | Braemar, Quairading | N6P and 32C 120E | 1962 |
| Powell Bros. | - | Commonage, Day Dawn | P0B | 1912 |
| Powell Bros. | - | Talbot Farm, Pintharuka Well, via Mingenew | P5B | 1912 |
| Powell Bros. | - | Commonage, Day Dawn | P0B | 1924 |
| Powell Bros. | - | Talbot Farm, Pintharuka Well, via Mingenew | P5B | 1924 |
| Powell, Son & Cordes | - | Gnarlo Station, Carnarvon | M9P | 1926 |
| Power | Cornelius J. | Esperance Loc. 923, Scadden | Q5X | 1924 |
| Power | D. | 3154 and 3072, East Witchcliffe | 8PD | 1962 |
| Power | Guy Francis | Mulgul Station, via Meekatharra | Q8P | 1925 |
| Power | Harold J. | c/o Mt. Clere Pastoral Co. via Yalgoo | WQ3 | 1924 |
| Power | Jno. | Darkan | PJ4 | 1912 |
| Power | Jno. | Dalkin | PJ4 | 1924 |
| Power | K. D. | 2188, 1078, 1013-4, Witchcliffe | KP5 and 103B, 47E | 1962 |
| Power | Mrs. Ethel M. | East Kirup, East Kirup P.O. | 4DQ | 1925 |
| Power | R. F. | Nichol Springs, Meekatharra | WQ3 and 35B, 24E | 1962 |
| Powers Bros. | - | Twinfield, Watheroo | PB1 | 1926 |
| Powlesland | F. G. | Brooklands Farm, Bowes, via Geraldton | 6FP | 1924 |
| Powley | E. H. | 2136, Denmark | EP1 | 1962 |
| Powley | E. T. | Lindsay-dale, Denmark | A5P | 1962 |
| Powney | G. T. | C.P. 7156/56, Cranbrook | G4P | 1912 |
| Powney | G. T. | C. P. 7156/56, Cranbrook | G4P | 1924 |
| Powney Bros. | - | Glen Valley, Cranbrook | 3PP | 1912 |
| Powney Bros. | - | Glenn Valley, Cranbrook | 3PP | 1924 |
| Poxon | L. & F. | Vol. 1075, Fol. 774 Swan 2799, Wanneroo | L4F and 105E, 11C | 1962 |
| Poynton | Edward | Lease 23538/55, Wickepin | PE3 | 1924 |
| Poynton & Co. Pty. Ltd. | J. J. | Ballaranga, Morowa | 6PJ and 22B, 45A | 1962 |
| Poyser & Sons | John | Mayville, East Beverley | JP5 | 1912 |
| Poyser & Sons | John | Mayville, East Beverley | JP5 | 1924 |
| Pozzi | C. A. | Fitzgerald Loc. 516. 601-2, Salmon Gums | 2CP and 19D, 26E | 1962 |
| Pozzi | H. P. | Loc. 481-5, Salmon Gums | HP3 and 38D, 14E | 1962 |
| Pozzi | J. | 372-4-5, Salmon Gums | JP1 and 5B, 50E | 1962 |
| Pozzi | R. | Roclincourt, Gnowangerup | R0P and 19C, 29E | 1962 |
| Praeder | Claud. | (on Ord River Station), Turkey Creek | QP4 | 1924 |
| Praetz | Alice A. | Block 3339, Southern Cross | A8P | 1912 |
| Praetz | Alice A. | Block 3339, Southern Cross | A8P | 1924 |
| Prater | A. J. | Mayfield, Gingin | 2PJ | 1912 |
| Prater | C. & M. | Williams Loc. 12676, Kulin | 9MC and 21B, 41A | 1962 |
| Prater | Frederick | Woodlands Farm, Morawa | PZ4 | 1924 |
| Prater | Jos. | Avon Loc. 23110, Nungarin | Q0D | 1924 |
| Prater | K. K. | Launella, Darlington | 2PJ and 4D, 23E | 1962 |
| Prater | R. C. & J. A. | Wattle Hill, Morowa | P0V and 37B, 6A | 1962 |
| Prater Bros. | - | Millview, Sandstone | 2PB | 1912 |
| Prater Bros. | - | Millview, Sandstone | 2PB | 1924 |
| Pratico | S. | Nelson Locs. 4415-6, Greenbushes | SP1 and 27B, 26E | 1962 |
| Pratt | Bert Henry | Common, Meekatharra | V8P | 1924 |
| Pratt | E. C. H. | Cardinenup, Ongerup | EP4 and 8B, 30E | 1962 |
| Pratt | F. A. | 1624, Witchcliffe | P4F | 1962 |
| Pratt | John F. | Annadale Farm, Carani Siding, via Toodyay | Y6P | 1924 |
