| Travers | F. sen. | Homestead, Australind | F6T | 1912 |
| Travers | F. sen. | Homestead, Australind | F6T | 1924 |
| Travers | R. V. | The Carroll, Bolgart | R4T and 32B, 104E | 1962 |
| Travis | Nelson | The Grange, Bridgetown | 2OL | 1912 |
| Travis | Nelson | The Grange, Bridgetown | 2OL | 1924 |
| Traylen | Wm. | Maccarine, Wooroloo | W5T | 1924 |
| Trcoli | C. | Yilgarn 786 and 1400, Bodallin | C1T and 57F, 21B | 1962 |
| Treadgold | Alfred | Bonnievale, Tambellup | AT7 | 1912 |
| Treadgold | Alfred | Bonnievale, Tambellup | AT7 | 1924 |
| Trease | H. L. | Nelson 11575, 18939, Manjimup | H8T and 21C, 45A | 1962 |
| Treasure | A. E. | Reads, Cunderdin | A2T and 12D, 31A | 1962 |
| Treasure | C. W. | Greenfields, Cannington | ZT3 | 1962 |
| Treasure | Cecil Wm. | Somerset, Noombling, Pingelly | VV0 | 1924 |
| Treasure | Chas. Wm. | Greenfields Farm, Queen's Park | ZT3 | 1924 |
| Treasure | E. | Pasendale Farm, North Cunderdin | T5U | 1924 |
| Treasure | E. | Pashendale Farm, North Cunderdin | T5U and 31B, 9E | 1962 |
| Treasure | Edwd. C. | Kojonup | 2ET | 1912 |
| Treasure | Emma Jane | Glen Burn, Kojonup | T4E | 1924 |
| Treasure | F. H. | 8486, 3658, 7760, 3698, 4290, 7693, 7753, 3659, Wubin | Y8T and 29D, 34E | 1962 |
| Treasure | Francis H. | Cunderdin North | Y8T | 1924 |
| Treasure | Jas. | She Oak Hill, Waeel | JT0 | 1912 |
| Treasure | Jas. | She Oak Hill, Waeel | JT0 | 1924 |
| Treasure | K. S. | Merridale, Cunderdin | KT5 and 106B, 21E | 1962 |
| Treasure | L. E. & S. R. | Martinup, Broome Hill | 2ET | 1924 |
| Treasure | L. J. E. | Ongerup, Kojonup | LT2 | 1912 |
| Treasure | L. J. E. | Ongerup, Kojonup | LT2 | 1924 |
| Treasure | O. J. | Yorgie Park, Cunderdin | 0TJ and 44B, 57F | 1962 |
| Treasure | O. J. & D. L. | Buffalo, Narrikup | O6T and 6C, 24E | 1962 |
| Treasure | Oliver John | Glenburn, Kojonup | O6T | 1924 |
| Treasure | R. E. | Greenfields Stud Farm, Cannington | ET1 and 53F, 46D | 1962 |
| Treasure | Ronald E. | Martinup, Broome Hill | R0N | 1928 |
| Treasure | T. J. Levi | Richmond, Bridgetown | 2LT | 1912 |
| Treasure | T. J. Levi | Richmond, Bridgetown | 2LT | 1924 |
| Treasure | V. V. | Chillakerup, Frankland | VT4 and 21D, 25E | 1962 |
| Treasure Bros. | - | Richmond, Kulikup | 2LT and 53F, 25B | 1962 |
| Treat | L. | Commonage, Sandy Creek | TL1 | 1912 |
| Treat | L. | Commonage, Sandy Creek | TL1 | 1924 |
| Trebley | W. | Loc. 37 Jeffrey Road, Bunbury | T7Y and 21B, 80A | 1962 |
| Tredrea | C. C. | Commonage, Dardanup | CT4 | 1912 |
| Tredrea | C. C. | Commonage, Dardanup | CT4 | 1924 |
| Tredrea | N. S. | Lot 175 Talbot Road, Hazelmere | NT6 and 102C, 30E | 1962 |
| Tree | A. L. | Contay, Carolup, Katanning | T6U | 1924 |
| Tree | Cyril G. | Allwood, Katanning | 9CT | 1912 |
| Tree | Cyril G. | Allwood, Katanning | 9CT | 1924 |
| Tree | L. D. | Kilima, Kwonrup, East Katanning | H4H and 12C, 38E | 1962 |
| Tree | R. E. | Trewelliup, Carrolup | RT8 | 1926 |
| Tree | R. E. | Trewillup, Katanning | RT8 and 10D, 14E | 1962 |
| Tree | R. G. | Trewillup, Carrolup | RT8 | 1912 |
| Tree | R. G. | Trewillup, Carrolup | RT8 | 1924 |
| Tree | Rosetta | Yenringa, Kojonup | TO5 | 1912 |
