| Perth Jarrah Mills ltd. | - | Lion Mill | B9B | 1924 |
| Perth, The City of | - | Town Hall, Perth | 1PK | 1924 |
| Perth, The City Of | - | City Pounds, Perth | 1PK and 103B, 118E | 1962 |
| Pestell & Son | - | Lot 239 Reem Road, Gidgegannup | P8S and 104D, 8E | 1962 |
| Petchell | E. F. S. | Damboring | 6XP | 1924 |
| Petchell | G. F. | Victoria Farm, Williams | XP1 | 1928 |
| Petchell | Ivan M. | Glenhowthan, East Beverley | N7P | 1924 |
| Petchell | J. T. & E. | Swan Loc. 1753, Mt. Helena | 7PX and 37B, 24E | 1962 |
| Petchell | Jno. T. | Williams Loc. 7999, 6050, 6051, 5788, C.P. Lease 20052/55, H.F. 10178/74 | 7PX | 1912 |
| Petchell | Jno. T. | Williams Loc. 7999, 6050, 6051, 5788, C.P. Lease 20052/55, H.F. 10178/74, Highbury | 7PG | 1924 |
| Petchell | K. E. | Glenhowthan, East Beverley | N7P and 11C, 28E | 1962 |
| Petchell | M. A. J. | Victoria Farm, Williams | AP9 | 1912 |
| Petchell | M. A. J. | Victoria Farm, Williams | AP9 | 1924 |
| Petchell | N. L. | Rose Park, Williams | F3D and 38C, 40E | 1962 |
| Petchell | R. | Milady, Ballidu | 6UP | 1924 |
| Petchell | Thos. | Victoria Farm, Williams | XP1 | 1912 |
| Petchell | Thos. | Victoria Farm, Williams | XP1 | 1924 |
| Petck | D. F. | Moore River, via Gingin | DP9 | 1924 |
| Peter | Lionel | Irishtown, Northam | LP5 | 1924 |
| Peter | Steven de Nys. | Never-Can-Tell, Dumbleyung | 0NA | 1924 |
| Peters | B. | Pt. of Lot M.1837 and Swan Loc. 1352, Muchea | BP1 and 43C, 67E | 1962 |
| Peters | E. G. & F. | Loc. 10252, Eneabba | OY8 and 10C, 45A | 1962 |
| Peters | E. J. & P. M. | Pertersfield, Mt. Barker | JP7 and 33D, 107E | 1962 |
| Peters | Ernest | Kalgoorlie | EP1 | 1912 |
| Peters | Ernest | Kalgoorlie | EP1 | 1924 |
| Peters | George Edward | Waddy Forrest, via Coorow | OY8 | 1925 |
| Peters | Jos. E. | Nutleigh Dene Farm, Korrelocking | 5PE | 1924 |
| Peters | L. K. | Lot 5, Wattle Grove | KP6 and 104B, 47A | 1962 |
| Peters | Miss F. | Arcadia, Hines' Hill | FP3 | 1924 |
| Peters | Miss Frances | Arcadia, Hine's Hill | FP3 | 1912 |
| Peters | O. V. | 190-1, Byford | O1V and 103D, 84E | 1962 |
| Peters | R. & R. | M.1372, Coorow | RP7 and 19B, 8A | 1962 |
| Peters | Reg. B. | Farm, Wickepin | RP8 | 1924 |
| Peters | Saml. | Yarling Park, Narrogin | 0SP | 1912 |
| Peters | Saml. | Yarling Park, Narrogin | 0SP | 1924 |
| Peters | T. E. | Hilders Dale, Minnivale | T0P and 49D, 33E | 1962 |
| Peters | T. W. | Hilder's Dale, Minnivale | T0P | 1924 |
| Peters | Victor | Jiberding, Nugadong | VP4 | 1924 |
| Peters | W. N. | The Jungle, Wickepin | 2NP | 1924 |
| Peters & Son | R. B. | Rangu Dairy, Wattle Grove | RP8 and 24B, 118A | 1962 |
| Petersen | A. | Middle Creek, Nullagine | B7S | 1912 |
| Petersen | A. | Mount View Farm, P.O. Dumbleyung | P2A | 1912 |
| Petersen | A. | Middle Creek, Nullagine | B7S | 1924 |
| Petersen | A. | Mount View Farm, P.O., Dumbleyung | P2A | 1924 |
| Petersen | C. H. | Bushlands, Manjimup | 4PC | 1962 |
| Petersen | C. H. | Jandakot Loc. AA Lot 87 No. 5, Armadale | VP9 and 113B, 37A | 1962 |
| Petersen | C. J. | The Meadows Loc. 1409, Esperance | CP7 and 5B, 108E | 1962 |
| Petersen | Chas. H. | Scott's Brook, Upper Blackwood, via Bridgetown | VP9 | 1924 |
| Petersen | F. T. | Roselea Farm, Dalwallinu | FP0 and 16B, 27A | 1962 |
| Petersen | James | Ethel Creek, Nullagine | J4P | 1912 |
