| Harmer | U. | 98 Newcastle Road, Midland Junction | Chevrolet | 1599 | Metro Private Car | 1925-26 |
| Harmer | U. | 98 Newcastle Road, Midland Junction | Chevrolet | 1599 | Metro Private Car | 1926-27 |
| Harmer | U. | 89 Newcastle Road, Midland Junction | Chevrolet | 1599 | Metro Private Car | 1927-28 |
| Harmer | V. | 19 Boundary Road, Midland Junction | Chevrolet | 1599 | Metro Private Car | 1924-25 |
| Harmes | U. | Boundary Road, Midland Junction | Excelsior & Sidecar | 1438 | Metro Motorcycle | 1922-23 |
| Harmes | U. | Boundary Road, Midland Junction | Smith Wheel | 1441 | Metro Motorcycle | 1922-23 |
| Harmon | H. J. | Marmellup | Overland | SU ● 66 | Sussex Road Board | 1926-27 |
| Harmon | H. J. | Marmellup | Overland | SU ● 66 | Sussex Road Board | 1927-28 |
| Harms | W. A. | 202 Adelaide Terrace | Calthorpe 3½ H.P. Motorcycle | P 781 | Perth Municipality | 1917-18 |
| Harms | W. A. | 133 Claremont Avenue, Claremont | Dodge | 14283 | Metro Private Car | 1927-28 |
| Harmson | Louisa | Adderly Street, Claremont | Chevrolet | 5775 | Metro Private Car | 1925-26 |
| Harnett | B. J. | Worsley | Dodge | H ● 114 | Harvey Road Board | 1925-26 |
| Harnett | J. | Worsley | Dodge | CO ● 37 | Collie Road Board | 1924-25 |
| Harnett | R. P. | Worsley | Buick | H ● 70 | Harvey Road Board | 1927-28 |
| Harnett | T. | Fitzgerald Street | Ford 20 H.P. | N 34 | Northam Municipality | 1915 |
| Harold | E. | 195 Albany Road, Victoria Park | Willys-Knight | 7397 | Metro Private Car | 1925-26 |
| Harold | E. | 195 Albany Road, Victoria Park | Willys-Knight | 7397 | Metro Private Car | 1926-27 |
| Harold | E. | 195 Albany Road, Victoria Park | Willys-Knight | 7397 | Metro Private Car | 1927-28 |
| Harold | E. J. | Toolibin | Ford | WK ● 13 | Wickepin Road Board | 1924-25 |
| Harold | M. V. | Gooseberry Hill | Austin | DR ● 125 | Darling Range Road Board | 1927-28 |
| Harold & Murray | - | Cnr. Albany &, Guildford Rds Vic. Park | Federal Wagon | 8571 | Metro Private Car | 1927-28 |
| Harper | A. | Albany | Chevrolet Truck | A 122 | Albany Municipality | 1927-28 |
| Harper | A. H. | Albany | Chevrolet | A 122 | Municipality of Albany | 1926-27 |
| Harper | A. L. | Nungarin | Ford | NA ● 6 | Nullagine Road Board | 1922-23 |
| Harper | A. L. | Nungarin | Ford | NA ● 6 | Nungarin Road Board | 1923-24 |
| Harper | A. L. | Nungarin | Ford | NA ● 6 | Nungarin Road Board | 1924-25 |
| Harper | B. | Fitzgerald Street, Geraldton | Overland | GN 66 | Geraldton Municipality | 1924-25 |
| Harper | C. | 33 Richardson Street | Maxwell | 492 | Metro Private Car | 1922-23 |
| Harper | C. | Trayning | Ford | KTY ● 14 | Kununoppin-Trayning Road Board | 1926-27 |
| Harper | C. | Trayning | Chevrolet Truck | KTY ● 14 | Kununoppin-Trayning Road Board | 1927-28 |
| Harper | C. G. | 77 Hannan Street | B.S.A. 3½ H.P. Motorcycle | KMC 50 | Kalgoorlie Municipality | 1916 |
| Harper | C. G. | 77 Hannan Street | B.S.A. 3½ H.P. Motorcycle | KMC 50 | Kalgoorlie Municipal Council | 1917-18 |
| Harper | C. G. | 77 Hannan Street | B.S.A. 3½ H.P. Motorcycle | KMC 50 | Kalgoorlie Municipality | 1919 |
| Harper | Charles | Hampton Road, Victoria Park | Ford 20 H.P. | P 206 | Perth Municipality | 1917-18 |
| Harper | Charles | Hampton Road, Victoria Park | Ford 20 H.P. | P 206 | Perth Municipality | 1919 |
| Harper | Chas | Hampton Road, Victoria Park | Dodge | 182 | Metro Private Car | 1926-27 |
| Harper | Chas. | Hampton Road | Ford 25 H.P. | VP 9 | Victoria Park Municipality | 1915 |
| Harper | Chas. | Hampton Road | Ford 25 H.P. | VP 9 | Victoria Park Municipality | 1916 |
| Harper | Chas. | Hampton Road, Victoria Park | Ford | 206 | Metro Private Car | 1922-23 |
| Harper | Chas. | Hampton Road, Victoria Park | Dodge | 182 | Metro Private Car | 1923-24 |
| Harper | Chas. | Hampton Road, Victoria Park | Dodge | 182 | Metro Private Car | 1925-26 |
| Harper | Chas. | Hampton Road, Victoria Park | Dodge | 182 | Metro Private Car | 1926-27 |
| Harper | Chas. | Hampton Road, Victoria Park | Dodge | 182 | Metro Private Car | 1927-28 |
| Harper | E. | - | Dodge 25 H.P. | GN 44 | Geraldton Municipality | 1917-18 |
| Harper | E. | - | Dodge 25 H.P. | GN 44 | Geraldton Municipality | 1919 |
| Harper | E. | Gregory Street, Geraldton | Oldsmobile | GN 80 | Geraldton Municipality | 1926-27 |
| Harper | E. | Gregory Street, Geraldton | Buick | GN 80 | Geraldton Municipality | 1927-28 |
| Harper | F. | 32 Richardson Street, West Perth | Auburn | 1012 | Metro Private Car | 1925-26 |
| Harper | F. | 32 Richardson Street, West Perth | Auburn | 492 | Metro Private Car | 1926-27 |
| Harper | F. | 32 Richardson Street, West Perth | Auburn | 492 | Metro Private Car | 1927-28 |
