| Robertson | G. | Darlot | Buick | LA ● 21 | Lawlers Road Board | 1927-28 |
| Robertson | G. N. | Darlot | Dodge | LA ● 22 | Lawlers Road Board | 1927-28 |
| Robertson | G. N. | Darlot | Reo Truck | LA ● 23 | Lawlers Road Board | 1927-28 |
| Robertson | H. | Corrigin | Ford Truck | CR ● 180 | Corrigin Road Board | 1927-28 |
| Robertson | H. A. | 29 Raglan Road, North Perth | Chevrolet | 8478 | Metro Private Car | 1925-26 |
| Robertson | H. J. | 52 Kimberley Street, West L'ville | Overland | 5086 | Metro Private Car | 1927-28 |
| Robertson | J. | Katanning | Ford | KA ● 87 | Katanning Road Board | 1924-25 |
| Robertson | J. | Katanning | Oldsmobile | KA ● 87 | Katanning Road Board | 1925-26 |
| Robertson | J. | Katanning | Oldsmobile | KA ● 87 | Katanning Road Board | 1926-27 |
| Robertson | J. | Katanning | Oldsmobile | KA ● 87 | Katanning Road Board | 1927-28 |
| Robertson | J. F. | Menzies | Buick | MN ● 18 | Menzies Road Board | 1924-25 |
| Robertson | J. F. | Menzies | Buick | MN ● 18 | Menzies Road Board | 1925-26 |
| Robertson | John F. | Menzies | Buick | MN ● 7 | Menzies Road Board | 1923-24 |
| Robertson | Joseph | Katanning | Ford 19 H.P. | KA ● 87 | Katanning Toad Board | 1922-23 |
| Robertson | Joseph | Katanning | Ford 19 H.P. | KA ● 87 | Katanning Road Board | 1923-24 |
| Robertson | L. | 322 Hay Street, Subiaco | Ford | 453 | Metro Private Car | 1922-23 |
| Robertson | L. J. | 322 Hay Street, Subiaco | Ford | 453 | Metro Private Car | 1923-24 |
| Robertson | L. J. | 322 Hay Street, Subiaco | Ford | 453 | Metro Private Car | 1924-25 |
| Robertson | L. J. | 322 Hay Street, Subiaco | Ford | 453 | Metro Private Car | 1925-26 |
| Robertson | Mrs G. | 1304 Hay Street | Dodge 20 H.P. | P 359 | Perth Municipality | 1917-18 |
| Robertson | Mrs G. | 1304 Hay Street | Dodge 20 H.P. | P 360 | Perth Municipality | 1919 |
| Robertson | Mrs Geo. | 1304 Hay Street, West Perth | Dodge Bros. 24 H.P. | P 359 | Perth Municipality | 1916 |
| Robertson | P. F. | Albany | Dodge | A 137 | Albany Municipality | 1927-28 |
| Robertson | R. | Carnamah | Ford | CA ● 12 | Carnamah Road Board | 1924-25 |
| Robertson | R. | Carnamah | Ford | CA ● 12 | Carnamah Road Board | 1925-26 |
| Robertson | R. | Carnamah | Ford | CA ● 12 | Carnamah Road Board | 1926-27 |
| Robertson | R. | Carnamah | Ford | CA ● 12 | Carnamah Road Board | 1927-28 |
| Robertson | R. M. | Wagin | Overland | W ● 92 | Wagin Road Board | 1927-28 |
| Robertson | T. | Kean Street | Ford 20 H.P. | PG ● 17 | Peppermint Grove Road Board | 1917-18 |
| Robertson | T. | Kean Street | Ford 20 H.P. | PG 17 | Peppermint Grove Road Board | 1919 |
| Robertson | W. | Keane Street | Ford 20 H.P. | PG 17 | Peppermint Grove Road Board | 1916 |
| Robertson | W. R. | 173 Thompson Road, South Fremantle | Ford Wagon | 3973 | Metro Hire or Trade | 1924-25 |
| Robertson | W. R. | Thompson Road, North Fremantle | Ford Wagon | 3937 | Metro Hire or Trade | 1925-26 |
| Robertson & Moffat | - | Murray Street, Perth | Clement Talbot 15 H.P. | P 256 | Perth Municipality | 1915 |
| Robertson Bros | - | Saint George's Terrace, Perth | Essex | 124 | Metro Private Car | 1922-23 |
| Robertson Bros | - | 91 Saint George's Terrace, Perth | Ford | 1221 | Metro Private Car | 1922-23 |
| Robertson Bros | - | 91 Saint George's Terrace, Perth | Ford | 1221 | Metro Private Car | 1924-25 |
| Robertson Bros Ltd | - | 91 Saint George's Terrace | Douglas 2¾ H.P. Motorcycle | P 621 | Perth Municipality | 1917-18 |
| Robertson Bros Ltd | - | 91 Saint George's Terrace, Perth | Ford | 1221 | Metro Private Car | 1925-26 |
| Robertson Bros Ltd | - | 91 Saint George's Terrace, Perth | Ford | 1221 | Metro Private Car | 1926-27 |
| Robertson Bros Ltd | - | 91 Saint George's Terrace, Perth | Essex | 124 | Metro Private Car | 1926-27 |
| Robertson Bros Ltd | - | 91 Saint George's Terrace, Perth | Essex | 124 | Metro Private Car | 1926-27 |
| Robertson Bros Ltd | - | 91 Saint George's Terrace, Perth | Essex | 124 | Metro Private Car | 1927-28 |
| Robertson Bros. Ltd | - | Perth | Douglas | P 621 | Perth Municipality | 1919 |
| Robertson Bros. Ltd | - | 91 Saint George's Terrace, Perth | Essex | 124 | Metro Private Car | 1923-24 |
| Robertson Bros. Ltd | - | 91 Saint Geoge's Terrace, Perth | Ford | 1221 | Metro Private Car | 1923-24 |
| Robertson BrosLtd | - | 91 Saint George's Terrace, Perth | Ford | 1221 | Metro Private Car | 1927-28 |
| Robey | L. W. | Pithara | Ford | DL ● 46 | Dalwallinu Road Board | 1923-24 |
| Robey | Mrs S. | Marion Street, Leederville | Ford | 11832 | Metro Private Car | 1926-27 |
| Robin | J. | 42 Stirling Street, Fremantle | Velie | 6193 | Metro Private Car | 1925-26 |
