| Caspar | L. T. | North Perth | Fiat | 2486 | Metro Private Car | 1926-27 |
| Casper | Louisa S. | 17 Clifton Crescent, Mount Lawley | Fiat | 2486 | Metro Private Car | 1927-28 |
| Cass | - | Dumbleyung | Chevrolet | DU ● 106 | Dumbleyung Road Board | 1925-26 |
| Cass | - | Dumbleyung | Chevrolet | DU ● 106 | Dumbleyung Road Board | 1926-27 |
| Cass | A. H. | 58 Queen's Crescent, Mount Lawley | International Wagon | 13445 | Metro Private Car | 1927-28 |
| Cass | Dr B. P. | Corrigin | Standard | CR ● 152 | Corrigin Road Board | 1927-28 |
| Cass | Dr N. L. | Boyup Brook | Dodge | BU ● 13 | Upper Blackwood Road Board | 1924-25 |
| Cass | Dr N. L. | Manjimup | Fiat | WA ● 105 | Manjimup Road Board | 1925-26 |
| Cass | Dr N. L. | Jarnadup | Fiat | WA ● 105 | Manjimup Road Board | 1926-27 |
| Cass | Dr N. L. | Jarnadup | Fiat | WA ● 105 | Manjimup Road Board | 1927-28 |
| Cass | Ellice Mrs | 58 Queen's Crescent, Mount Lawley | Dodge | 2656 | Metro Private Car | 1923-24 |
| Cass | H. | Dumbleyung | Chevrolet | DU ● 106 | Dumbleyung Road Board | 1927-28 |
| Cass | Mrs E. | 58 Queen's Crescent, Mount Lawley | Chevrolet Truck | 5988 | Metro Private Car | 1924-25 |
| Cass | Mrs E. | Queen's Crescent, Mount Lawley | Dodge | 2656 | Metro Private Car | 1924-25 |
| Cass | Mrs E. | 58 Queen's Crescent, Mount Lawley | Dodge | 2656 | Metro Private Car | 1925-26 |
| Cass | Mrs E. | 58 Queens Crescent, Mount Lawley | Chevrolet Truck | 5988 | Metro Private Car | 1925-26 |
| Cass | Mrs E. | 58 Queen's Crescent, Mount Lawley | Dodge | 2656 | Metro Private Car | 1926-27 |
| Cass | Mrs E. | 58 Queen's Crescent, Mount Lawley | Dodge | 2656 | Metro Private Car | 1927-28 |
| Cassells | J. B. | Boulder | Overland 12-16 H.P. | B 1 | Boulder Municipality | 1915 |
| Cassells | J. B. | 137 Adelaide Terrace, Perth | Hudson | 3126 | Metropolitan Hire and Trade Cars | 1923-24 |
| Cassells | J. B. | 137 Adelaide Terrace, Perth | Hudson | 3127 | Metropolitan Hire and Trade Cars | 1923-24 |
| Cassells | J. B. | 137 Adelaide Terrace, Perth | Studebaker | 3128 | Metropolitan Hire and Trade Cars | 1923-24 |
| Cassells | J. B. | 137 Adelaide Terrace, Perth | Ford Wagon | 3452 | Metropolitan Hire and Trade Cars | 1923-24 |
| Cassells | J. B. | 137 Adelaide Terrace, Perth | Nash | 3488 | Metropolitan Hire and Trade Cars | 1923-24 |
| Cassells | J. B. | 137 Adelaide Terrace, Perth | Hudson | 3126 | Metro Private Car | 1924-25 |
| Cassells | J. B. | 137 Adelaide Terrace, Perth | Studebaker | 3128 | Metro Private Car | 1924-25 |
| Cassells | J. B. | 137 Adelaide Terrace, Perth | Hudson | 3126 | Metro Hire or Trade | 1925-26 |
| Cassells | J. B. | 138 Adelaide Terrace, Perth | Studebaker | 3128 | Metro Hire or Trade | 1925-26 |
| Cassells | J. B. | 137 Adelaide Terrace, Perth | Studebaker | 3128 | Metro Hire or Trade | 1926-27 |
| Cassels | Emily E. | 137 Adelaide Terrace, Perth | Nash | 2380 | Metro Private Car | 1927-28 |
| Cassels | J. B. | Suburban Road | Studebaker 20 H.P. | SP 12 | South Perth Municipality | 1917-18 |
| Cassels | J. B. | Suburban Road, South Perth | Studebaker 26 H.P. | P 78 | Perth Municipality | 1917-18 |
| Cassels | J. B. | Suburban Road, South Perth | Studebaker 26 H.P. | P 661 | Perth Municipality | 1917-18 |
| Cassels | J. B. | Suburban Road | Studebaker 20 H.P. | SP 12 | South Perth Municipality | 1919 |
| Cassels | J. B. | 137 Adelaide Terrace, Perth | Nash | 3488 | Metro Private Car | 1924-25 |
| Cassels | J. B. | 137 Adelaide Terrace, Perth | Nash | 3488 | Metro Hire or Trade | 1926-27 |
| Cassels | J. H. | 137 Adelaide Terrace, Perth | Essex | 13509 | Metro Private Car | 1926-27 |
| Cassels | J. P. | Forrest Street | Overland 20 H.P. | KMC 19 | Kalgoorlie Municipality | 1916 |
| Cassels & Phillips | - | Murray Street | Studebaker 20 H.P. | P 78 | Perth Municipality | 1919 |
| Cassels & Phillips | - | Murray Street | Studebaker 20 H.P. | P 294 | Perth Municipality | 1919 |
| Cassels & Phillips | - | Central Motor Garage | Studebaker 18 H.P. | P 660 | Perth Municipality | 1919 |
| Cassels & Phillips | - | Central Motor Garage | Studebaker 20 H.P. | P 661 | Perth Municipality | 1919 |
| Casserley | W. J. | 89 Attfield Street, Fremantle | Ford Truck | 3959 | Metro Hire or Trade | 1925-26 |
| Cassey | A. | Mundijong | Trailer | SJ ● 106 | Serpentine-Jarrahdale Road Board | 1927-28 |
| Cassey | C. | Melville Parade, Como | Chevrolet | 8442 | Metro Private Car | 1925-26 |
| Cassey | Chas. | Tea Rooms Como | Pontiac | 14846 | Metro Private Car | 1927-28 |
| Cassey | P. | Yallingup | Chevrolet | SU ● 29 | Sussex Road Board | 1925-26 |
| Cassey | P. | Marmellup | Chevrolet | SU ● 29 | Sussex Road Board | 1926-27 |
| Cassey | P. | Yallingup | Chevrolet | SU ● 29 | Sussex Road Board | 1927-28 |
| Cassey | P. | Kojonup | Oldsmobile | KO ● 165 | Kojonup Road Board | 1927-28 |
