| Jeffrey | J. A. | Gabbin | Ford | MM 35 | Mount Marshall Road Board | 1924-25 |
| Jeffrey | J. G. | Gooseberry Hill | Chevrolet | DR ● 39 | Darling Range Road Board | 1926-27 |
| Jeffrey | James | Marleyup via Kojonup | Ford 20 H.P. | KO 20 | Kojonup Road Board | 1919 |
| Jeffrey | James | Marleyup via Kojonup | Studebaker | KO ● 20 | Kojonup Road Board | 1922-23 |
| Jeffrey | James | Kojonup | Studebaker | KO ● 20 | Kojonup Road Board | 1923-24 |
| Jeffrey | James | Wagin | Overland | W ● 11 | Wagin Road Board | 1926-27 |
| Jeffrey | L. P. | Corrigin | Chevrolet | CR ● 206 | Corrigin Road Board | 1926-27 |
| Jeffrey | M. | York Street, South Fremantle | Ford Wagon | 12488 | Metro Private Car | 1927-28 |
| Jeffrey | Mrs E. | Highway Nedlands | - | CL ● 17 | Claremont Road Board | 1919 |
| Jeffrey | MrsE. | Highway, Nedlands | Car | CL ● 17 | Claremont Road Board | 1917-18 |
| Jeffrey | P. P. | Hardman Road, Claremont | Ford | 1864 | Metro Private Car | 1923-24 |
| Jeffrey | P. P. | Hardman Road, Claremont | Dort | 7960 | Metro Private Car | 1927-28 |
| Jeffrey | R. | C/o G.P.O Perth | Ford | 463 | Metro Private Car | 1926-27 |
| Jeffrey | S. | 22 Chelmsford Road, Mount Lawley | Chevrolet | 7953 | Metro Private Car | 1927-28 |
| Jeffrey | T. B. | - | C. & S. C. Motorcycle | CB 2 | Cottesloe Beach Road Board | 1915 |
| Jeffrey | T. B. | - | Cycle & side car | CB 22 | Cottesloe Beach Road Board | 1916 |
| Jeffrey | T. B. | - | Ford | CB ● 2 | Cottesloe Beach Road Board | 1917-18 |
| Jeffrey | V. R | Harrismith | Dodge | WK ● 103 | Wickepin Road Board | 1926-27 |
| Jeffrey | V. R. | Wickepin | Ford | WK ● 10 | Wickepin Road Board | 1923-24 |
| Jeffrey | V. R. | Harrismith | Oakland | WK ● 103 | Wickepin Road Board | 1924-25 |
| Jeffrey | V. R. | Harrismith | Oakland | WK ● 103 | Wickepin Road Board | 1925-26 |
| Jeffrey | V. R. | Harrismith | Dodge | WK ● 103 | Wickepin Road Board | 1927-28 |
| Jeffrey & Sons | - | Corrigin | Ford | CR ● 73 | Corrigin Road Board | 1925-26 |
| Jeffrey & Sons | - | Corrigin | Ford | CR ● 73 | Corrigin Road Board | 1926-27 |
| Jeffrey Bros | - | Spearwood Road, Coogee | International W. | 1642 | Metro Private Car | 1924-25 |
| Jeffrey Bros | - | Spearwood Road, Coogee | International Wagon | 1642 | Metro Private Car | 1925-26 |
| Jeffrey Bros | - | Coondle | Ford | T ● 144 | Toodyay Road Board | 1926-27 |
| Jeffreys | E. G. | Wooroloo | J.H.C. | GE ● 89 | Greenmount Road Board | 1927-28 |
| Jeffreys | E. G. | Wooroloo | Buick | GE ● 90 | Greenmount Road Board | 1927-28 |
| Jeffreys | J. | - | Ford Truck | CU ● 11 | Upper Chapman Road Board | 1924-25 |
| Jeffreys | J. | - | Ford Truck | CU ● 11 | Upper Chapman Road Board | 1925-26 |
| Jeffreys | J. | - | Ford Truck | CU ● 11 | Upper Chapman Road Board | 1927-28 |
| Jeffreys | J. A. | Koorda | Maxwell | WM ● 149 | Wyalkatchem Road Board | 1925-26 |
| Jeffreys | J. A. | Fitzgerald Street | Dodge | N 2 | Northam Municipality | 1925-26 |
| Jeffreys | J. A. | Fitzgerald Street | Dodge | N 66 | Northam Municipality | 1925-26 |
| Jeffreys | J. A. | Fitzgerald Street | Studebaker | N 100 | Northam Municipality | 1925-26 |
| Jeffreys | J. A. | Northam | International Charabanc | N ● 199 | Northam Road Board | 1925-26 |
| Jeffreys | J. A. | Fitzgerald Street | Dodge | N 2 | Northam Municipality | 1926-27 |
| Jeffreys | J. A. | Fitzgerald Street | Dodge | N 200 | Northam Municipality | 1926-27 |
| Jeffreys | J. A. | Fitzgerald Street | Essex | N 100 | Northam Municipality | 1927-28 |
| Jeffreys | J. A. | Fitzgerald Street | Oakland | N 200 | Northam Municipality | 1927-28 |
| Jeffreys | J. A. | Fitzgerald Street | Demonstration | N 250 | Northam Municipality | 1927-28 |
| Jeffreys | J. A. | Koorda | Maxwell | WM ● 149 | Wyalkatchem Road Board | 1927-28 |
| Jeffreys | Mrs E. | York Street, Beaconsfield | Dodge | 11567 | Metro Private Car | 1926-27 |
| Jeffreys | Mrs E. | York Street, Beaconsfield | Dodge | 11567 | Metro Private Car | 1927-28 |
| Jeffreys | Mrs E. | York Street, Beaconsfield | Dodge | 11567 | Metro Private Car | 1927-28 |
| Jeffreys | R. | 163 Hill Street, Fremantle | Studebaker | 4044 | Metro Private Car | 1923-24 |
| Jeffreys | R. | 163 Hill Street, Fremantle | Studebaker | 4044 | Metro Private Car | 1925-26 |
| Jeffreys | R. | 163 Hill Street, Fremantle | Studebaker | 4044 | Metro Private Car | 1927-28 |
| Jeffreys | R. S. | 183 Hill Street, Fremantle | Overland 20 H.P. | F 6 | Fremantle Municipal Council | 1917-18 |
