| Thomas | A. J. | Brackland, Lake Pinjar | X8T | 1924 |
| Thomas | A. L. | Thomaston, Mt. Barker | TN3 and 35B, 25A | 1962 |
| Thomas | A. V. | Goodwood Farm, Donnybrook | 9VT | 1924 |
| Thomas | A. W. | Kia Ora, Cowcowing | TA5 | 1924 |
| Thomas | A.C & G.R. | Tynyeaena, Kununoppin | G8T | 1912 |
| Thomas | A.C. & G. R. | Tynycaena, Kununoppin | G8T | 1924 |
| Thomas | A.E. | Ravenswood, Pinjarra | A6T | 1912 |
| Thomas | A.W. | Kia Ora, Cowcowing | TA5 | 1912 |
| Thomas | Albert | Wannere, Moon River | 1TO | 1912 |
| Thomas | Albert | Wannere, Moore River | 1TO | 1924 |
| Thomas | Alexander | Caro, Dandarragan | 3AX | 1924 |
| Thomas | Arthur | Cambrian Dairy, Robinson Estate, Albany | 7TX | 1924 |
| Thomas | Augustus | Orange Grove, Mardella, via Serpentine | T7X | 1924 |
| Thomas | C. C. | Warrawagine, Port Hedland | X1C | 1924 |
| Thomas | C. F. | Hill Padua, Three Springs | 7FT and 119E, 8E | 1962 |
| Thomas | C. Hy | Glen Hewett, Taylor's Well | CH6 | 1912 |
| Thomas | C. Hy. | Glen Hewett, Taylor's Well | CH6 | 1924 |
| Thomas | C. J. | AA 25-9. 7431, 7421, 9508, 4380, 7478, AA 30, Mullewa | CT2 and 4B, 36A | 1962 |
| Thomas | C. L. | Nelson 12078, Northcliffe | B4D | 1962 |
| Thomas | C. L. | Curdiwerup, Manjimup | XT6 and 10D, 30E | 1962 |
| Thomas | C. L. & E. R. | East Rockingham | U1U | 1927 |
| Thomas | C. L. & E. R. | 14 Parkin Street East Rockingham | U1U | 1962 |
| Thomas | C.C. | Warrawagine, Port Hedland | X1C | 1912 |
| Thomas | Chas. F. | Kadathinni Farm, Three Springs | 7FT | 1924 |
| Thomas | Cleve L. | Lease, Perup River, Manjimup | XT6 | 1924 |
| Thomas | D. | Green Valley | DT1 | 1912 |
| Thomas | D. | Green Valley | DT1 | 1924 |
| Thomas | D. | Westfield, Northampton | 6DT and 29D, 7E | 1962 |
| Thomas | Daisy M. | Cockburn Sound Loc. 138, Rockingham | 5DT | 1924 |
| Thomas | Daniel | Temtrely Farm, Northampton | DT2 | 1912 |
| Thomas | Daniel | Temterly Farm, Northampton | DT2 | 1924 |
| Thomas | David | Westfield, Northampton | 6DT | 1928 |
| Thomas | Dorothy | Group 35, Mundijong | TQ6 | 1924 |
| Thomas | E. B. | Lots 34 and 35, Yandanooka | K8H | 1925 |
| Thomas | E. B. | Guranu Lots 8 and 9, Mingenew | GW1 and 33B, 39A | 1962 |
| Thomas | E. J. W. | Ivy Cottage, Rockingham | VD7 | 1924 |
| Thomas | E. K. | Swan Farm, Katanning | UT9 and 41D, 58F | 1962 |
| Thomas | E.J.W. | Ivy Cottage, Rockingham | VD7 | 1912 |
| Thomas | Elizabeth | Commonage, Mt. Magnet | 5OU | 1924 |
| Thomas | Ern | Lot 100, Wellington Loc. 50A, Harvey | YQ6 | 1925 |
| Thomas | F. C & A. | Yarra Yarra, Carnamah | YY4 | 1924 |
| Thomas | F. H. | Lilydale, Albany | FT4 and 35B, 20A | 1962 |
| Thomas | F. H. & J. F. | Jun Jun, Coorow | 8TT | 1924 |
| Thomas | F.C & A. | Yarra Yarra, Carnamah | YY4 | 1912 |
| Thomas | Frank H. | Loc. 182, Group 29, Oakford via Mundijong | FT0 | 1928 |
| Thomas | Fred. C. | Lime Kilns, Subiaco | 7XT | 1924 |
| Thomas | Frederic H. | Mt. Pleasant, Kirup, S.W.R. | 5QG | 1928 |
| Thomas | Fredk. James | Wytree Run, 3212/96, Meekatharra | 3YT | 1924 |
| Thomas | G. | Yilgarn, Southern Cross | 1GT | 1912 |
| Thomas | G. | Yilgarn, Southern Cross | 1GT | 1924 |
