| Pratt | A. | Gnowangerup | New Hudson 3½ H.P. Motorcycle | GN ● 4 | Gnowangerup Road Board | 1919 |
| Pratt | A. | Gnowangerup | Ford | GN ● 12 | Gnowangerup Road Board | 1923-24 |
| Pratt | A. | 131 Cambridge Street, Leederville | Ford | 6242 | Metro Private Car | 1924-25 |
| Pratt | A. | Gnowangerup | Ford | GN ● 12 | Gnowangerup Road Board | 1924-25 |
| Pratt | A. | 131 Cambridge Street, Leederville | Ford | 6242 | Metro Private Car | 1925-26 |
| Pratt | A. | Gnowangerup | Ford | GN ● 12 | Gnowangerup Road Board | 1925-26 |
| Pratt | A. | Gnowangerup | Ford Truck | GN ● 12 | Gnowangerup Road Board | 1926-27 |
| Pratt | A. | Gnowangerup | Studebaker | GN ● 121 | Gnowangerup Road Board | 1926-27 |
| Pratt | A. | 131 Cambridge Street, Leederville | Ford | 6242 | Metro Private Car | 1926-27 |
| Pratt | A. | 131 Cambridge Street, Leederville | Ford Van | 6242 | Metro Private Car | 1927-28 |
| Pratt | A. | Gnowangerup | Studebaker | GN ● 121 | Gnowangerup Road Board | 1927-28 |
| Pratt | A. A. | Gnowangerup | Ford Truck | GN ● 12 | Gnowangerup Road Board | 1927-28 |
| Pratt | A. R. | 88 Forrest Street, North Perth | Whippet | 5399 | Metro Private Car | 1927-28 |
| Pratt | Arthur | 131 Cambridge Street, Leederville | Ford | 3338 | Metropolitan Hire and Trade Cars | 1923-24 |
| Pratt | C. | Katanning | B.S.A. | KA 21 | Katanning Road Board | 1919 |
| Pratt | C. | Busselton | Studebaker | BN 53 | Busselton Municipality | 1924-25 |
| Pratt | C. B. | Bulong-Road | B.S.A. Motorcycle | K ● 6 | Kalgoorlie Road Board | 1922-23 |
| Pratt | F. B. | Swan Street, North Fremantle | Overland | 5018 | Metro Private Car | 1924-25 |
| Pratt | F. C. | - | Triumph | Y 25 | York Municipality | 1916 |
| Pratt | F. J. | 2 Brown Street, South Perth | Buick | 2407 | Metro Private Car | 1927-28 |
| Pratt | G. C. | 114 South Terrace, Fremantle | Overland | 11530 | Metro Private Car | 1926-27 |
| Pratt | G. C. | 114 South Terrace, Fremantle | Overland | 11530 | Metro Private Car | 1927-28 |
| Pratt | G. C. | 114 South Terrace, Fremantle | Overland | 11530 | Metro Private Car | 1927-28 |
| Pratt | S. M. | Cherrytree Pool Road, Kojonup | Talbot | KO ● 45 | Kojonup Road Board | 1923-24 |
| Pratt | S. M. | Kojonup | Ford | KO ● 45 | Kojonup Road Board | 1924-25 |
| Pratt | S. M. | Kojonup | Ford | KO ● 45 | Kojonup Road Board | 1925-26 |
| Pratt | S. M. | Kojonup | Ford | KO ● 45 | Kojonup Road Board | 1926-27 |
| Pratt | S. M. | Kojonup | Ford | KO ● 45 | Kojonup Road Board | 1927-28 |
| Pratt | W. | Koorda | Ford | WM ● 352 | Wyalkatchem Road Board | 1927-28 |
| Pratt & Stoner | - | - | Ford 15 H.P. | CD 3 | Cue-Day Dawn Road Board | 1916 |
| Pratt & Stoner | - | - | Ford 15 H.P. | CD 4 | Cue-Day Dawn Road Board | 1916 |
| Preacher | George | 120 Anzac Road, Mount Hawthorn | Austin | 11270 | Metro Private Car | 1927-28 |
| Predrick | Wm T. | Wagin | Chevrolet | W ● 50 | Wagin Road Board | 1924-25 |
| Predrick | Wm. T. | Wagin | Chevrolet | W ● 50 | Wagin Road Board | 1922-23 |
| Preedy | - | - | Chevrolet Truck | CU ● 103 | Upper Chapman Road Board | 1927-28 |
| Preistley | C. C. | Woodbridge House, East Guildford | Ford | 2721 | Metro Private Car | 1926-27 |
| Preistley | C. C. | Woodbridge House, East Guildford | Ford | 2721 | Metro Private Car | 1927-28 |
| Premier | - | - | Car | P 368 | Perth Municipality | 1917-18 |
| Premier | - | - | Car | P 517 | Perth Municipality | 1917-18 |
| Premier | Hon. the | Perth | Ford 20 H.P. | P 74 | Perth Municipality | 1915 |
| Premier | Hon. the | - | - | P 155 | Perth Municipality | 1915 |
| Premier | Hon. the | - | - | P 517 | Perth Municipality | 1915 |
| Premier | Hon. The | - | - | P 155 | Perth Municipality | 1916 |
| Premier | Hon.The | - | - | P 74 | Perth Municipality | 1916 |
| Premier Catering Co | - | Guildford Road, Mount Lawley | Ford Van | 2353 | Metro Private Car | 1922-23 |
| Premier Catering Co | - | Guildford Road, Mount Lawley | Ford van | 2353 | Metro Private Car | 1923-24 |
| Premier Catering Co | - | Guildford Road, Mount Lawley | Ford Wagon | 2795 | Metro Private Car | 1923-24 |
| Premier Catering Co | - | Guildford Road, Mount Lawley | Ford Wagon | 2795 | Metro Private Car | 1924-25 |
| Premier Catering Co | - | Guildford Road, Mount Lawley | Ford Van | 2353 | Metro Private Car | 1924-25 |
| Premier Catering Co | - | Guildford Road, Mount Lawley | Ford Van | 7505 | Metro Private Car | 1925-26 |
