| Treanor | J. | Bootmaker | Perth | 1885 | Herald Almanack |
| Treanor | J. | Bootmaker | Perth | 1886 | WA Almanack |
| Treanor | J. | Bootmaker | Perth | 1887 | WA Almanack |
| Treanor | J. | Bootmaker | Perth | 1888 | WA Almanack |
| Treanor | J. | Bootmaker | Perth | 1889 | WA Almanack |
| Treanor & Smeddles | - | Boot?and Shoemaker & Importers | Perth | 1879 | Herald Almanack |
| Treanor & Smeddles | - | Shoemakers Curriers &c. | Perth | 1879 | WA Almanack |
| Treanor & Smeddles | - | Boot & Shoemakers & Importers | Perth | 1880 | Herald Almanack |
| Treanor & Smeddles | - | Shoemakers Curriers &c. | Perth | 1880 | WA Almanack |
| Treanor & Smeddles | - | Shoemakers, Curriers, &c. | Perth | 1881 | WA Almanack |
| Treanor&smeddles | - | Boot & Shoemakers, Importers | Perth | 1881 | Herald Almanack |
| Trease | J. C. | Architect & Surveyor | High Street, Fremantle | 1897 | Witton's Directory |
| Trease | J. G. | Architect | Market Street, Fremantle | 1897 | Witton's Directory |
| Treasure | E. | Sheep Farmer | Albany | 1873 | Herald Almanack |
| Treasure | E. | Sheepfarmer | Albany | 1874 | Herald Almanack |
| Treasure | E. | Farmer | Albany | 1877 | Herald Almanack |
| Treasure | E. | Farmer | Albany | 1877 | WA Almanack |
| Treasure | E. | Farmer | Albany | 1878 | Herald Almanack |
| Treasure | E. | Farmer | Albany | 1879 | Herald Almanack |
| Treasure | E. | Farmer (Eticup) | Albany Road | 1879 | WA Almanack |
| Treasure | E. | Farmer | Albany | 1879 | WA Almanack |
| Treasure | E. | Farmer | Albany | 1880 | Herald Almanack |
| Treasure | E. | Frmr. and Grazier | Albany Road (Eticup) | 1880 | WA Almanack |
| Treasure | E. | Farmer | Albany | 1880 | WA Almanack |
| Treasure | E. | Farmer | Albany | 1881 | Herald Almanack |
| Treasure | E. | Farmer & grazier | Albany Road (Eticup) | 1881 | WA Almanack |
| Treasure | E. | Farmer | Albany | 1881 | WA Almanack |
| Treasure | E. | Farmer | Albany | 1882 | Herald Almanack |
| Treasure | E. | Farmer & Sheepowner | Kojonup | 1882 | Herald Almanack |
| Treasure | E. | Farmer | Albany | 1882 | WA Almanack |
| Treasure | E. | Farmer | Albany | 1883 | Herald Almanack |
| Treasure | E. | Farmer & Sheepowner | Kojonup | 1883 | Herald Almanack |
| Treasure | E. | Farmer | Albany | 1884 | Herald Almanack |
| Treasure | E. | Farmer & Sheepowner | Kojonup | 1884 | Herald Almanack |
| Treasure | E. | Farmer & Grazier | Albany River (Eticup) | 1884 | WA Almanack |
| Treasure | E. | Farmer & Sheepowner | Kojonup | 1885 | Herald Almanack |
| Treasure | E. | Licensed Victualler | Albany Road (Kojonup) | 1886 | WA Almanack |
| Treasure | Jas. | | Northam | 1897 | Witton's Directory |
| Treasury Buildings | | | Barrack Street, Perth | 1897 | Witton's Directory |
| Treasury Office (George Emery) | | | Bayley Street, Coolgardie | 1897 | Witton's Directory |
| Tredera | J. | Teamster | Maitland River | 1883 | Herald Almanack |
| Tredrea | J. | Teamster | Maitland River | 1880 | Herald Almanack |
| Tredrea | J. | Teamster | North-West Coast (Maitland River) | 1880 | WA Almanack |
| Tredrea | J. | Teamster | Maitland River | 1881 | Herald Almanack |
| Tredrea | J. | Teamster | North-West Coast (Maitland River) | 1881 | WA Almanack |
| Tredrea | J. | Teamster | Maitland River | 1882 | Herald Almanack |
| Tredrea | J. | Shepherd | North-West Coast (Fortescue) | 1882 | WA Almanack |
| Tredrea | J. | Teamster | Maitland River | 1884 | Herald Almanack |
| Tredrea | J. | Labourer | North-West Coast (Maitland River) | 1884 | WA Almanack |
| Tredrea | J. | Labourer | North-West Coast (Maitland River) | 1886 | WA Almanack |
