| Sims | W. A. | Mount Hardey York | Triumph 3½ H.P. Motorcycle | Y ● 9 | York Road Board | 1922-23 |
| Sims Bros | - | Main Street, Osborne Park | Ford Truck | P ● 138 | Perth Road Board | 1924-25 |
| Sims Bros | - | Main Street, Osborne Park | Ford Truck | P ● 138 | Perth Road Board | 1927-28 |
| Sinclair | - | Claremont Ave, Claremont | Motorcycle | C 46 | Claremont Municipality | 1917-18 |
| Sinclair | A. | Allen Street, East Fremantle | Whippet | 15911 | Metro Private Car | 1927-28 |
| Sinclair | A. D. | 18 Bay Road, Claremont | Amil | 9499 | Metro Private Car | 1926-27 |
| Sinclair | A. D. | 18 Bay Road, Claremont | Chevrolet | 12177 | Metro Private Car | 1927-28 |
| Sinclair | A. J | Wongan Hills | Buick | WB ● 63 | Wongan-Ballidu Road Board | 1926-27 |
| Sinclair | A. J. | Wogan Hill | Buick | WB ● 63 | Wongan-Ballidu Road Board | 1927-28 |
| Sinclair | A. W. | Edward Street, Nedlands | Dodge | 388 | Metro Private Car | 1923-24 |
| Sinclair | A. W. | Edward Street, Nedlands | Dodge | 388 | Metro Private Car | 1926-27 |
| Sinclair | D. J. | Dalwallinu | Dodge | DL ● 106 | Dalwallinu Road Board | 1926-27 |
| Sinclair | D. J. | Dalwallinu | Dodge | DL ● 106 | Dalwallinu Road Board | 1927-28 |
| Sinclair | E. B. | 188 Walcott Street, Mount Lawley | Singer | 9401 | Metro Private Car | 1926-27 |
| Sinclair | E. B. | 188 Walcott Street, North Perth | Singer | 9401 | Metro Private Car | 1927-28 |
| Sinclair | G. E. | Wongan Hills | Willys-Knight | WB ● 223 | Wongan-Ballidu Road Board | 1927-28 |
| Sinclair | G. M. | 32 Waverley Street, Subiaco | Overland | 7900 | Metro Private Car | 1925-26 |
| Sinclair | G. M. | 32 Waverley Street, Subiaco | Overland | 7900 | Metro Private Car | 1926-27 |
| Sinclair | G. M. | 32 Waverley Street, Subiaco | Overland | 7900 | Metro Private Car | 1927-28 |
| Sinclair | Geo. E. | Kondut | Willys-Knight | WB ● 19 | Wongan-Ballidu Road Board | 1926-27 |
| Sinclair | H. D. | Esplanade, South Perth | Fiat | 2486 | Metro Private Car | 1925-26 |
| Sinclair | J. | Princess Road | - | C 46 | Claremont Municipality | 1915 |
| Sinclair | J. | Princess Road | - | C 46 | Claremont Municipality | 1916 |
| Sinclair | J. | 3 Goldsworthly Road, Claremont | Essex | 777 | Metro Private Car | 1924-25 |
| Sinclair | J. | 3 Goldsworthy Road, Claremont | Essex | 777 | Metro Private Car | 1925-26 |
| Sinclair | J. | 3 Goldsworthy Road, Claremont | Essex | 777 | Metro Private Car | 1926-27 |
| Sinclair | J. | 3 Goldworthy Road, Claremont | Essex | 777 | Metro Private Car | 1927-28 |
| Sinclair | J. | - | Columbia | CU ● 173 | Upper Chapman Road Board | 1927-28 |
| Sinclair | J. H. | Tambellup | Ford | TA ● 8 | Tambellup Road Board | 1925-26 |
| Sinclair | J. H. | Tambellup | Ford | TA ● 8 | Tambellup Road Board | 1926-27 |
| Sinclair | J. H. | 1 Barsden Street, Cottesloe | Rugby | 15828 | Metro Private Car | 1927-28 |
| Sinclair | J. H. | Tambellup | Ford | TA ● 8 | Tambellup Road Board | 1927-28 |
| Sinclair | J. R. | Dalwallinu | Ford | DL ● 82 | Dalwallinu Road Board | 1925-26 |
| Sinclair | J. V. | Albany | Chevrolet | A 10 | Albany Municipality | 1923-24 |
| Sinclair | J. V. | Albany | Nash | A 10 | Municipality of Albany | 1924-25 |
| Sinclair | J. V. | Albany | Nash | A 10 | Municipality of Albany | 1925-26 |
| Sinclair | J. V. | Albany | Nash | A 10 | Municipality of Albany | 1926-27 |
| Sinclair | J. V. | Albany | Nash | A 10 | Albany Municipality | 1927-28 |
| Sinclair | John | - | - | BO 4 | Brookton Road Board | 1916 |
| Sinclair | John | Goldsworthy Road, Claremont | Essex | 777 | Metro Private Car | 1923-24 |
| Sinclair | Mrs E. | Canning Road, East Fremantle | Ford | 1178 | Metro Private Car | 1927-28 |
| Sinclair | Mrs J. J. | 27 Edwards Street, Nedlands | Maxwell | 5567 | Metro Private Car | 1924-25 |
| Sinclair | Mrs J. J. | 27 Edwards Street, Nedlands | Maxwell | 5567 | Metro Private Car | 1925-26 |
| Sinclair | R. | Dalgety Street, East Fremantle | Oakland | 2896 | Metro Private Car | 1924-25 |
| Sinclair | R. | Dalgety Street, East Fremantle | Oakland | 2896 | Metro Private Car | 1925-26 |
| Sinclair | R. | Edward Street, Cottesloe | Oakland | 2896 | Metro Private Car | 1926-27 |
| Sinclair | R. C. | Claremont Avenue, Claremont | - | C 46 | Claremont Municipality | 1919 |
| Sinclair | R. G. | No. 1 State Mill | Dodge | WA ● 111 | Manjimup Road Board | 1925-26 |
| Sinclair | R. G. | No. 1 State Saw Mill | Dodge | WA ● 111 | Manjimup Road Board | 1926-27 |
| Sinclair | S. W. | Henry Street, Northam | Studebaker | N 76 | Northam Municipality | 1923-24 |
