| Howard | J. | Wuraming | Whippet | MR ● 25 | Marradong Road Board | 1927-28 |
| Howard | J. M. | 94 Nelson Crescent, East Perth | Hupmobile | 6426 | Metro Private Car | 1924-25 |
| Howard | J. M. | 114 Bennett Street, East Perth | Hupmobile | 6426 | Metro Private Car | 1925-26 |
| Howard | J. M. | 14 Bennett Street, East Perth | Hupmobile | 13678 | Metro Private Car | 1926-27 |
| Howard | J. M. | 14 Bennett Street, East Perth | Hupmobile | 13678 | Metro Private Car | 1927-28 |
| Howard | J. R. | Newcastle Road, Midland Junction | Ford Wagon | 12046 | Metro Private Car | 1926-27 |
| Howard | M. | Gnowangerup | Hupmobile | GN ● 8 | Gnowangerup Road Board | 1927-28 |
| Howard | P. S | Dowerin | Ford | D ● 69 | Dowerin Road Board | 1926-27 |
| Howard | P. S. | Dowerin | Ford | D ● 69 | Dowerin Road Board | 1924-25 |
| Howard | P. S. | Dowerin | Ford | D ● 69 | Dowerin Road Board | 1925-26 |
| Howard | P. S. | Dowerin | Ford | D ● 69 | Dowerin Road Board | 1927-28 |
| Howard | R. D. | Gnowangerup | Hupmobile | GN ● 8 | Gnowangerup Road Board | 1922-23 |
| Howard | R. D. | Gnowangerup | Ford | GN ● 9 | Gnowangerup Road Board | 1922-23 |
| Howard | R. D. | Gnowangerup | Hupmobile | GN ● 8 | Gnowangerup Road Board | 1923-24 |
| Howard | R. D. | Gnowangerup | Ford | GN ● 9 | Gnowangerup Road Board | 1923-24 |
| Howard | R. D. | Gnowangerup | Hupmobile | GN ● 8 | Gnowangerup Road Board | 1924-25 |
| Howard | R. D. | Gnowangerup | Hupmobile | GN ● 9 | Gnowangerup Road Board | 1924-25 |
| Howard | R. D. | Gnowangerup | Dodge Truck | GN ● 50 | Gnowangerup Road Board | 1924-25 |
| Howard | R. D. | Gnowangerup | Hupmobile | GN ● 8 | Gnowangerup Road Board | 1925-26 |
| Howard | R. D. | Gnowangerup | Hupmobile | GN ● 9 | Gnowangerup Road Board | 1925-26 |
| Howard | R. D. | Gnowangerup | Dodge Truck | GN ● 50 | Gnowangerup Road Board | 1925-26 |
| Howard | R. D. | Gnowangerup | Hupmobile | GN ● 8 | Gnowangerup Road Board | 1926-27 |
| Howard | R. D. | Gnowangerup | Hupmobile | GN ● 9 | Gnowangerup Road Board | 1926-27 |
| Howard | R. D. | Gnowangerup | Dodge Truck | GN ● 50 | Gnowangerup Road Board | 1926-27 |
| Howard | R. D. | Gnowangerup | Hupmobile | GN ● 9 | Gnowangerup Road Board | 1927-28 |
| Howard | Ruby E. | 34 Shenton Street, East Perth | Ford | 14702 | Metro Private Car | 1927-28 |
| Howard | T. C. | Manjimup | Chevrolet | WA ● 138 | Manjimup Road Board | 1926-27 |
| Howard | T. C. | Kelmscott | Chevrolet Wagon | 12630 | Metro Private Car | 1927-28 |
| Howard | Thos. W. | 87 Cantonment Street | B.S.A. 4½ H.P. Motorcycle | F 119 | Fremantle Municipality | 1916 |
| Howard | W. | Korrelocking | Dodge | WM ● 192 | Wyalkatchem Road Board | 1926-27 |
| Howard | W. | Korrelocking | Dodge | WM ● 191 ● | Wyalkatchem Road Board | 1927-28 |
| Howard | W. G. | Meckering | Dodge | ME ● 282 | Meckering Road Board | 1926-27 |
| Howard | W. G. | Meckering | Dodge | ME ● 282 | Meckering Road Board | 1927-28 |
| Howard | W. H. | Wickepin | Chevrolet | WK ● 239 | Wickepin Road Board | 1927-28 |
| Howard | W. H. G. | 31 Rathay Street, Victoria Park | Ford | 215 | Metro Private Car | 1927-28 |
| Howard | W. J. | Popanyinning | Dodge | CN ● 24 | Cuballing Road Board | 1924-25 |
| Howard | W. J. | Popanyinning | Dodge | CN ● 23 | Cuballing Road Board | 1925-26 |
| Howard | W. J. | Popanyinning | Dodge | CN ● 23 | Cuballing Road Board | 1926-27 |
| Howard | W. J. | Popanyinning | Dodge | CN ● 23 | Cuballing Road Board | 1927-28 |
| Howard and Morris | - | Darkan | Ford | AW ● 25 | Arthur (West) Road Board | 1923-24 |
| HowaRoad | S. F. | Serpentine | Chevrolet | SJ ● 118 | Serpentine-Jarrahdale Road Board | 1927-28 |
| Howarth | G. S. | 208 Barker Road, Subiaco | Citroen | 7930 | Metro Private Car | 1926-27 |
| Howarth | G. S. | 208 Barker Road, Subiaco | Citroen | 7934 | Metro Private Car | 1927-28 |
| Howarth | J. G. | Standard Place, Murray Street | Standard 4¼ H.P. Motorcycle | P 858 | Perth Municipality | 1917-18 |
| Howarth | J. G. | Standard Place | B.S.A. 4¼ H.P. Motorcycle | P 858 | Perth Municipality | 1919 |
| Howarth | T. G. | Wanneroo Road, Osborne Park | Chevrolet Truck | P ● 185 | Perth Road Board | 1927-28 |
| Howarth & Mitchelmore | - | Nungarin | Ford Truck | NA ● 144 | Nungarin Road Board | 1927-28 |
| Howden | C. O. | Murchison Downs | Ford | NN ● 10 | Nannine Road Board | 1922-23 |
| Howden | C. O. | Murchison Station | Ford | NN ● 10 | Nanine Road Board | 1923-24 |
| Howden | C. O. | Murcchison Down | Chevrolet | NN ● 19 | Nanine Road Board | 1923-24 |
