| Parker | L. | Yealering | Chevrolet | WK ● 155 | Wickepin Road Board | 1926-27 |
| Parker | L. | Yealering | Chevrolet | WK ● 245 | Wickepin Road Board | 1927-28 |
| Parker | L. E. | Shenton Street, Gerladton | Overland | GN 66 | Geraldton Municipality | 1925-26 |
| Parker | L. P. | Carnamah | Dodge | MI ● 30 | Mingenew Road Board | 1923-24 |
| Parker | L. P. | Carnamah | Dodge | CA ● 20 | Carnamah Road Board | 1924-25 |
| Parker | L. P. | Carnamah | Dodge | CA ● 20 | Carnamah Road Board | 1925-26 |
| Parker | L. P. | Carnamah | Dodge | CA ● 20 | Carnamah Road Board | 1926-27 |
| Parker | L. P. | Carnamah | Ford Truck | CA ● 134 | Carnamah Road Board | 1926-27 |
| Parker | L. P. | Carnamah | Dodge | CA ● 20 | Carnamah Road Board | 1927-28 |
| Parker | L. P. | Carnamah | Ford Truck | CA ● 134 | Carnamah Road Board | 1927-28 |
| Parker | L. T. | Dowerin | Chevrolet | D ● 177 | Dowerin Road Board | 1926-27 |
| Parker | L. T. | Dowerin | Chevrolet | D ● 177 | Dowerin Road Board | 1927-28 |
| Parker | Mrs G. | York | Ford | Y ● 38 | York Road Board | 1922-23 |
| Parker | Mrs G. | York | Chevrolet | Y ● 38 | York Road Board | 1923-24 |
| Parker | Mrs G. E. | 4 Miller Street, Victoria Park | Overland | 6689 | Metro Private Car | 1924-25 |
| Parker | Mrs G. E. | 4 Miller Street, Victoria Park | Overland | 6689 | Metro Private Car | 1925-26 |
| Parker | Mrs G. E. | 4 Miller Street, Victoria Park | Overland | 6689 | Metro Private Car | 1926-27 |
| Parker | Mrs M. | Kojonup | Oldsmobile | KO ● 112 | Kojonup Road Board | 1925-26 |
| Parker | Mrs M. | Kojonup | Oldsmoible | KO ● 112 | Kojonup Road Board | 1926-27 |
| Parker | Mrs M. | Kojonup | Oldsmobile | KO ● 112 | Kojonup Road Board | 1927-28 |
| Parker | Mrs V. S. | 2 Riley Road, Claremont | Hupmobile | 5648 | Metro Private Car | 1924-25 |
| Parker | Mrs V. S. | 2 Riley Street, Claremont | Hupmobile | 5648 | Metro Private Car | 1925-26 |
| Parker | Mrs V. S. | 2 Riley Road, Claremont | Hupmobile | 5648 | Metro Private Car | 1926-27 |
| Parker | Mrs W. B. | Chidlow Street | Chevrolet | N 153 | Northam Municipality | 1925-26 |
| Parker | P. J. | 236 Hare Street, Kalgoorlie | Chevrolet | KMC 298 | Kalgoorlie Municipal Council | 1926-27 |
| Parker | P. J. | 236 Hare Street, Kalgoorlie | Chevrolet | KMC 298 | Kalgoorlie Municipal Council | 1927-28 |
| Parker | R. E. | 15 Murray Street, Perth | Norton & Sidecar | 945 | Metro Motorcycle | 1922-23 |
| Parker | R. E. | 34 Wickham Street, East Perth | Ford | 7240 | Metro Private Car | 1925-26 |
| Parker | R. E. | 34 Wickham Street, East Perth | Ford | 7240 | Metro Private Car | 1926-27 |
| Parker | R. E. | 130 Raglan Road, North Perth | Ford | 7240 | Metro Private Car | 1927-28 |
| Parker | R. G. | Woodside | Buick | Y ● 37 | York Road Board | 1922-23 |
| Parker | R. G. | Woodside York | Buick | Y ● 37 | York Road Board | 1923-24 |
| Parker | R. G. | Hamersley | Buick | Y ● 37 | York Road Board | 1924-25 |
| Parker | R. G. | Hamersley | Buick | Y ● 37 | York Road Board | 1925-26 |
| Parker | R. T. H | Wandering | Ford | WD ● 21 | Wandering Road Board | 1926-27 |
| Parker | R. T. H. | Nets Vale Wandering | Ford | WD ● 21 | Wandering Road Board | 1924-25 |
| Parker | R. T. H. | Neta Vale Wandering | Ford | WD ● 21 | Wandering Road Board | 1925-26 |
| Parker | R. T. H. | Neta Vale | Ford | WD ● 21 | Wandering Road Board | 1927-28 |
| Parker | R. W. | Nullagine | Federal-Knight Truck | NU ● 23 | Nullagine Road Board | 1927-28 |
| Parker | Ronald | Woolstock Station, Wodgina | Motorcycle | PHRB 1 | Port Hedland Road Board | 1915 |
| Parker | Ronald W. | Woodstock Station | Ford | PH ● 4 | Port Hedland Road Board | 1922-23 |
| Parker | Ronald W. | Woodstock Station | Chevrolet | PH ● 1 | Port Hedland Road Board | 1924-25 |
| Parker | S. | Toodyay | Ford Truck | T ● 138 | Toodyay Road Board | 1926-27 |
| Parker | S. | Toodyay | Ford Truck | T ● 138 | Toodyay Road Board | 1927-28 |
| Parker | S. D. | Wyalkatchem | Ford Truck | WM ● 109 | Wyalkatchem Road Board | 1926-27 |
| Parker | S. F. A. | Northam | Dodge | N ● 27 | Northam Road Board | 1922-23 |
| Parker | S. F. A. | Northam | Dodge | N ● 27 | Northam Road Board | 1923-24 |
| Parker | S. F. A. | Northam | Dodge | N ● 27 | Northam Road Board | 1924-25 |
| Parker | S. J. | York | Ford | Y 34 | York Municipality | 1925-26 |
| Parker | S. J. | York | Ford | Y 34 | York Municipality | 1927-28 |
