| Treasure | Mrs E. J. | Broomehill | Ford | BH ● 86 | Broomehill Road Board | 1927-28 |
| Treasure | S. R. | Wubin | Essex | DL ● 178 | Dalwallinu Road Board | 1927-28 |
| Treasure | T. J. L. | Dinninup | Dodge | BU ● 44 | Upper Blackwood Road Board | 1924-25 |
| Treasure | T. L. J. | Dinninup | Dodge | BU ● 44 | Upper Blackwood Road Board | 1925-26 |
| Treasure & Carrington | - | Wagin | Studebaker 12 H.P. | WM 6 | Wagin Municipality | 1917-18 |
| Treasure & Carrington | - | Wagin | Maxwell 15 H.P. | WM 12 | Wagin Municipality | 1917-18 |
| Treaure | F. A. | Wubin | Chevrolet | DL ● 207 | Dalwallinu Road Board | 1927-28 |
| Trebley | W. | Baandee | Ford Truck | KE ● 71 | Kellerberrin Road Board | 1925-26 |
| Trebley | W. | Baandee | Ford | KE ● 80 | Kellerberrin Road Board | 1925-26 |
| Trebley | W. | Baandee | Ford Truck | KE ● 71 | Kellerberrin Road Board | 1926-27 |
| Trebley | W. | Baanoco | Ford | KE ● 213 | Kellerberrin Road Board | 1926-27 |
| Trebley | W. | Baandee | Ford Truck | KE ● 71 | Kellerberrin Road Board | 1927-28 |
| Trebley | W. | Baandee | Ford | KE ● 213 | Kellerberrin Road Board | 1927-28 |
| Trebly | W. L. | Baandee | Ford | KE ● 80 | Kellerberrin Road Board | 1924-25 |
| Tredennick | N. M. | Bedfordale | Chevrolet | A-K ● 141 | Armadale-Kelmscott Road Board | 1927-28 |
| Tredgoid | F. G. A. | Perth-Fremantle Road, Cottesloe | Ford 15 H.P. | Ce 7 | Cottesloe Municipality | 1916 |
| Tree | A S. | Katanning | Morris-Cowley | KA ● 310 | Katanning Road Board | 1927-28 |
| Tree | A. R. | Carrolup | Ford | KA ● 95 | Katanning Road Board | 1925-26 |
| Tree | A. R. | Carrolup | Ford | KA ● 95 | Katanning Road Board | 1926-27 |
| Tree | A. R. | Carrolup | Ford | KA ● 95 | Katanning Road Board | 1927-28 |
| Tree | C G. | Carrolup | Pontiac | KA ● 52 | Katanning Road Board | 1927-28 |
| Tree | C. | Katanning | Ford | KA ● 52 | Katanning Road Board | 1924-25 |
| Tree | C. G. | Carrolup | Ford | KA ● 52 | Katanning Road Board | 1925-26 |
| Tree | C. G. | Carrolup | Ford | KA ● 52 | Katanning Road Board | 1926-27 |
| Tree | Cyril | Katanning | Ford | KA ● 52 | Katanning Road Board | 1917-18 |
| Tree | Cyril | Katanning | Ford | KA 52 | Katanning Road Board | 1919 |
| Tree | Cyril | Katanning | Ford 19 H.P. | KA ● 52 | Katanning Road Board | 1922-23 |
| Tree | M. W. | 38 Temple Street, Victoria Park | Chevrolet Wagon | 7319 | Metro Private Car | 1926-27 |
| Tree | Mrs M. | 38 Temple Street, Victoria Park | Chevrolet | 13224 | Metro Private Car | 1926-27 |
| Tree | Mrs M. | 38 Temple Street, Victoria Park | Chevrolet | 13224 | Metro Private Car | 1927-28 |
| Tree | R. E. | Katanning | Ford | KA ● 131 | Katanning Road Board | 1924-25 |
| Tree | R. E. | Carrolup | Ford | KA ● 131 | Katanning Road Board | 1925-26 |
| Tree | R. E. | Carrolup | Ford | KA ● 131 | Katanning Road Board | 1926-27 |
| Tree Maud | M. | 38 Temple Street, Victoria Park | Chevrolet Wagon | 7319 | Metro Private Car | 1927-28 |
| Treeby | G. | Forrest Road, Jandakot | Chevrolet | 9738 | Metro Private Car | 1926-27 |
| Treeby | G. | Forrest Road, Jandakot | Chevrolet | 9738 | Metro Private Car | 1927-28 |
| Treeby | H. T. | 27 Bray Road, Claremont | Chevrolet | 12268 | Metro Private Car | 1926-27 |
| Treeby | Harold | Jandakot | Overland | 11545 | Metro Private Car | 1927-28 |
| Treeby | Harold | Jandakot | Overland | 11545 | Metro Private Car | 1927-28 |
| Treeby | J. H. | Ninth Avenue, Armadale | Ford Wagon | 2490 | Metro Private Car | 1924-25 |
| Treeby | J. H. | 9th Avenue, Armadale | Ford Wagon | 2490 | Metro Private Car | 1925-26 |
| Treeby | J. H. | Armadale | Ford Wagon | 2490 | Metro Private Car | 1926-27 |
| Treeby | J. H. | Armadale | International Wagon | 14569 | Metro Private Car | 1927-28 |
| Treeby | Mrs E. | Ninth Road, Armadale | Ford | 13136 | Metro Private Car | 1926-27 |
| Treeby | Mrs E. | Armadale | Whippet | 13136 | Metro Private Car | 1927-28 |
| Treeby & Son | - | Jandakot | International Truck | J ● 5 | Jandakot Road Board | 1923-24 |
| Treeby & Sons | - | Jandakot | International Truck | J ● 5 | Jandakot Road Board | 1924-25 |
| Treeby & Sons | - | Jandakot | International Truck | J ● 5 | Jandakot Road Board | 1924-25 |
| Treeby & Sons | - | Jandakot | International Wagon | 12161 | Metro Private Car | 1927-28 |
| Treeby & Sons | J. | Forrest Road, Jandakot | International Wagon | 6109 | Metro Private Car | 1924-25 |
