| Unbehaun & Johnstone | - | 37 King Street | F.N. 2½ H.P. Motorcycle | P 747 | Perth Municipality | 1916 |
| Unbehaun & Johnstone | - | 37 King Street | F.N. 2¾ H.P. Motorcycle | P 896 | Perth Municipality | 1916 |
| Unbehaun & Johnstone | - | 383 Murray Street, Perth | Ford | 8734 | Metro Private Car | 1926-27 |
| Unbehaun & Johnstone Ltd | - | 37 King Street | F.N.2½ H.P. Motorcycle | P 747 | Perth Municipality | 1917-18 |
| Unbehaun and Johnstone | - | 37 King Street, Perth | Ford | 345 | Metro Private Car | 1923-24 |
| Undehaun & Johnstone | - | 37 King Street | Emblem 5 H.P. | P 747 | Perth Municipality | 1919 |
| Underdown | C. | Cnr. Fairlight & Monument Street, Cottesloe Beach | Ford Van | 8943 | Metro Private Car | 1925-26 |
| Underdown | C. | Cnr. Fairlight & Monument Street, Cottesloe Beach | Ford Van | 8943 | Metro Private Car | 1926-27 |
| Underdown | C. | Fairlight Street, Cottesloe Beach | Whippet | 5537 | Metro Private Car | 1927-28 |
| Underdown | H. Jnr. | Mundaring | Chrysler | GE ● 24 | Greenmount Road Board | 1927-28 |
| Underdown | N. | Mundaring | Graham Truck | GE ● 56 | Greenmount Road Board | 1926-27 |
| Underdown | N. | Mundaring | Graham Truck | GE ● 56 | Greenmount Road Board | 1927-28 |
| Underdown | T. | Ballidu | Chevrolet | WB ● 77 | Wongan-Ballidu Road Board | 1926-27 |
| Underdown | T. | Ballidu | Chevrolet | WB ● 77 | Wongan-Ballidu Road Board | 1927-28 |
| Underdown | T. E. | Beverley | Ford | BEV 6 | Beverley Road Board | 1915 |
| Underwood | . H. | Wandering | Buick | WD ● 9 | Wandering Road Board | 1923-24 |
| Underwood | A. E. Mrs | 72 6th Avenue, Maylands | Ford | 2406 | Metro Private Car | 1923-24 |
| Underwood | E. | C/o Armstrong's | Car 20 H.P. | KMC 86 | Kalgoorlie Municipal Council | 1922-23 |
| Underwood | E. | C/o. Armstrong's | Car 20 H.P. | KMC ● 86 | Kalgoorlie Municipality | 1923-24 |
| Underwood | E. G. | 43 Forrest Street, Subiaco | Clement-Bayard | 6371 | Metro Private Car | 1924-25 |
| Underwood | E. G. | 43 Forrest Street, Subiaco | Clement-Bayard | 6371 | Metro Private Car | 1925-26 |
| Underwood | Ernest | 17 Hay Street, Subiaco | Vincent Hollier | 4632 | Metro Private Car | 1923-24 |
| Underwood | F. J. | 72 Sixth Avenue, Maylands | Chevrolet Wagon | 2406 | Metro Private Car | 1927-28 |
| Underwood | G. W. | 72 South Avenue, Maylands | Rugby | 2406 | Metro Private Car | 1924-25 |
| Underwood | G. W. | 72 Sixth Avenue, Maylands | Rugby | 2406 | Metro Private Car | 1925-26 |
| Underwood | G. W. | Maylands | Rugby | 2406 | Metro Private Car | 1926-27 |
| Underwood | H. I | Brookton | Ford | BO ● 9 | Brookton Road Board | 1927-28 |
| Underwood | H. L. | Brookton | Ford | BO ● 9 | Brookton Road Board | 1925-26 |
| Underwood | H. L. | Brookton | Ford | BO ● 9 | Brookton Road Board | 1926-27 |
| Underwood | Hugh L. | Brookton | Ford | BO ● 9 | Brookton Road Board | 1924-25 |
| Underwood | J. | Coorow | Oakland | CA ● 110 | Carnamah Road Board | 1926-27 |
| Underwood | J. | Coorow | Oakland | CA ● 110 | Carnamah Road Board | 1927-28 |
| Underwood | Mrs A. E. | 72 Sixth Avenue, Maylands | Ford | 2406 | Metro Private Car | 1922-23 |
| Underwood | P. H. H. | Tammin | Rngby | ME ● 36 | Meckering Road Board | 1927-28 |
| Underwood | R. B. | York | Ford | Y 23 | York Municipality | 1924-25 |
| Underwood | R. B. | York | Buick | Y 23 | York Municipality | 1925-26 |
| Underwood | R. B. | York | Ford | Y 23 | York Municipality | 1926-27 |
| Underwood | R. B. | York | Ford | Y 23 | York Municipality | 1927-28 |
| Underwood | W. H. | Wandering | Buick 18 H.P. | WD ● 9 | Wandering Road Board | 1922-23 |
| Underwood | W. H. | Wandering | Buick | WD ● 9 | Wandering Road Board | 1924-25 |
| Underwood | W. H. | Wandering | Buick | WD ● 9 | Wandering Road Board | 1925-26 |
| Underwood | W. H. | Wandering | buick | WD ● 9 | Wandering Road Board | 1926-27 |
| Underwood | W. H. | - | Dodge | NR ● 122 | Northampton Road Board | 1926-27 |
| Underwood | W. H. | Wandering | Buick | WD ● 9 | Wandering Road Board | 1927-28 |
| Union | A. W. | - | B.S.A. 4½ H.P. Motorcycle | GN 25 | Geraldton Municipality | 1917-18 |
| Union | A. W. | - | B.S.A. 4½ H.P. Motorcycle | GN 25 | Geraldton Municipality | 1919 |
| Union | A. W. | Marine Terrace, Geraldton | Dodge | GN 61 | Geraldton Municipality | 1925-26 |
| Union | A. W. | Weekatharra | Ford | MK ● 72 | Meekatharra Road Board | 1926-27 |
| Union | A. W. | Marine Terrace, Geraldton | Dodge | GN 61 | Geraldton Municipality | 1926-27 |
| Union Ass. Co | - | Viking House, Perth | Overland | 2444 | Metro Private Car | 1923-24 |
