| Johnston | Edward | Cranbrook | Ford 20 H.P. | TA ● 11 | Tambellup Road Board | 1917-18 |
| Johnston | Edward | Kojonup | Buick | KO ● 48 | Kojonup Road Board | 1923-24 |
| Johnston | F. M. | - | Ford 20 H.P. | FRB 5 | Fremantle Road Board | 1916 |
| Johnston | F. W. | 806 Beaufort Street, Maylands | Chevrolet | 4923 | Metro Private Car | 1927-28 |
| Johnston | Fred | Albany | Ford | A 6 | Albany Municipality | 1923-24 |
| Johnston | G. H. | Kalamunda | Buick 15-18 H.P. | DR 4 | Darling Range Road Board | 1916 |
| Johnston | G. H. | - | Buick 15-18 H.P. | DR ● 4 | Darling Range Road Board | 1917-18 |
| Johnston | G. H. | Gooseberry Hill | Dodge | DR ● 22 | Darling Range Road Board | 1923-24 |
| Johnston | G. P. | Millendon | Overland | SW ● 17 | Swan Road Board | 1922-23 |
| Johnston | H. | Dangin | Ford 14 H.P. | AV ● 1 | Avon Road Board | 1919 |
| Johnston | H. | Dangin | Austin | Q ● 11 | Quairading Road Board | 1925-26 |
| Johnston | H. | Dangin | Ford Truck | Q ● 186 | Quairading Road Board | 1926-27 |
| Johnston | H. | Dargin | Austin | Q ● 11 | Quairading Road Board | 1926-27 |
| Johnston | H. | Dangin | Ford Truck | Q ● 186 | Quairading Road Board | 1927-28 |
| Johnston | H. A. | Bedfordale | Overland | A-K ● 108 | Armadale-Kelmscott Road Board | 1926-27 |
| Johnston | H. A. | Bruce Rock | Rugby | BK ● 259 | Bruce Rock Road Board | 1927-28 |
| Johnston | H. A. | Bedfordale | Overland | A-K ● 108 | Armadale-Kelmscott Road Board | 1927-28 |
| Johnston | H. C. | Kulin | Ford | RE ● 60 | Roe Road Board | 1925-26 |
| Johnston | H. C. | Kulin | Ford | KU ● 15 | Kulin Road Board | 1926-27 |
| Johnston | H. C. | Kulin | Ford | KU ● 15 | Kulin Road Board | 1927-28 |
| Johnston | H. D. | Leschenault | Oakland | BY ● 5 | Bunbury Road Board | 1927-28 |
| Johnston | H. D. | Fitzgerald Street, Geraldton | Ford | GN 119 | Geraldton Municipality | 1927-28 |
| Johnston | H. F. | Bunbury | Chevrolet | BY 7 | Bunbury Municipality | 1927-28 |
| Johnston | H. L. | 6 Judd Street, South Perth | Chevrolet | 14928 | Metro Private Car | 1927-28 |
| Johnston | H. T. | Bunbury | Chevrolet | By 7 | Bunbury Municipality | 1924-25 |
| Johnston | H. T. | Bunbury | Chevrolet | BY 7 | Bunbury Municipality | 1925-26 |
| Johnston | H. T. | Bunbury | Chevrolet | BY 7 | Bunbury Municipality | 1926-27 |
| Johnston | I. | 6 Mackie Street, Victoria Park | Chevrolet | 4620 | Metro Private Car | 1924-25 |
| Johnston | I. | Winchester | Ford Truck | CA ● 80 | Carnamah Road Board | 1926-27 |
| Johnston | I. | Winchester | Ford Truck | CA ● 80 | Carnamah Road Board | 1927-28 |
| Johnston | Irvine | 6 Mackie Street, Victoria Park | Chevrolet | 4620 | Metro Private Car | 1923-24 |
| Johnston | J. | - | Triumph 3½ H.P. Motorcycle | GN 37 | Geraldton Municipality | 1917-18 |
| Johnston | J. | Augusta | Ford | AU ● 72 | Augusta Road Board | 1927-28 |
| Johnston | J. A. | Cranbrook | Overland | TA ● 35 | Tambellup Road Board | 1925-26 |
| Johnston | J. A. | Cranbrook | Chevrolet | CB ● 63 | Cranbrook Road Board | 1927-28 |
| Johnston | J. B. | Hampton Road, Fremantle | Harley Davidson | 1303 | Metro Motorcycle | 1922-23 |
| Johnston | J. E. | Dangin | Ford | Q ● 227 | Quairading Road Board | 1926-27 |
| Johnston | J. E. | Dangin | Ford | Q ● 227 | Quairading Road Board | 1927-28 |
| Johnston | J. H. | Swanbourne Terrace, Cottesloe | Overland 15 H.P. | Ce 49 | Cottesloe Municipality | 1916 |
| Johnston | J. W. | Cunderdin | Dodge | ME ● 278 | Meckering Road Board | 1926-27 |
| Johnston | J. W. | Cunderdin | Dodge | ME ● 278 | Meckering Road Board | 1927-28 |
| Johnston | Jack. | Hampton Road, Fremantle | Harley Sport | 1346 | Metro Motorcycle | 1922-23 |
| Johnston | James | Jardee | Chevrolet | WA ● 213 | Manjimup Road Board | 1927-28 |
| Johnston | Janet | 6 Mackie Street, Victoria Park | Chevrolet | 4620 | Metro Private Car | 1926-27 |
| Johnston | Janet Miss | 148 Barker Road, Subiaco | Overland | 2735 | Metro Private Car | 1923-24 |
| Johnston | John. | Mackie Street, Victoria Park | Essex | 2367 | Metro Private Car | 1927-28 |
| Johnston | K. | Merredin | Fiat | MD ● 271 | Merredin Road Board | 1927-28 |
| Johnston | K. | 57 Howard Street, Fremantle | Chevrolet | 12590 | Metro Private Car | 1927-28 |
| Johnston | K. B. | Wongan Hills | Dodge | WB ● 111 | Wongan-Ballidu Road Board | 1927-28 |
| Johnston | K. J. | Burracoppin | Chevrolet | MD ● 279 | Merredin Road Board | 1927-28 |
