| Roberts | A. | | Ford | KW ● 16 | West Kimberley Road Board | 1924-25 |
| Roberts | A. | Belmont Avenue, Belmont | CHevrolet | 6533 | Metro Private Car | 1926-27 |
| Roberts | A. E. | Jones Street, Collie | Chevrolet | CM 13 | Collie Municipality | 1926-27 |
| Roberts | A. E. | 84 Sailsbury Street, Subiaco | Morris cowley | 2678 | Metro Private Car | 1927-28 |
| Roberts | A. E. | Jones Street, Collie | Chevrolet | CM 13 | Collie Municipality | 1927-28 |
| Roberts | A. H. | 1 Bernard Street, Leederville | Premier 3½ H.P. Motorcycle | P 611 | Perth Municipality | 1915 |
| Roberts | A. H. | 1 Bernard Street, Leederville | Regal | 4899 | Metro Private Car | 1923-24 |
| Roberts | A. H. | 1 Bernard Street, Leederveille | Regal | 4899 | Metro Private Car | 1924-25 |
| Roberts | A. H. | 1 Bernard Street, Leederville | Regal | 8308 | Metro Private Car | 1925-26 |
| Roberts | A. H. | 1 Bernard Street, Leederville | Regal | 8308 | Metro Private Car | 1926-27 |
| Roberts | A. J. | 15 Rokeby Road, Subiaco | Ford | 8427 | Metro Private Car | 1925-26 |
| Roberts | A. J. | 66 Hay Street, Subiaco | Ford | 8427 | Metro Private Car | 1926-27 |
| Roberts | A. J. | 66 Hay Street, Subiaco | Ford | 8427 | Metro Private Car | 1927-28 |
| Roberts | A. L. | Meekatharra | Chevrolet | MK ● 23 | Meekatharra Road Board | 1924-25 |
| Roberts | A. L. | Meekatharra | Chevrolet | MK ● 23 | Meekatharra Road Board | 1925-26 |
| Roberts | A. L. | Meekatharra | Willys-Knight | MK ● 34 | Meekatharra Road Board | 1926-27 |
| Roberts | A. L. | Meekatharra | Willys-Knight | MK ● 34 | Meekatharra Road Board | 1927-28 |
| Roberts | Albert | 56 Murray Street, Perth | Triumph 3½ H.P. Motorcycle | P 919 | Perth Municipality | 1916 |
| Roberts | Alfred | Derby | Ford | KW ● 16 | West Kimberley Road Board | 1923-24 |
| Roberts | Andrew L. | Meekatharra | Chevrolet | MK ● 39 | Meekatharra Road Board | 1923-24 |
| Roberts | Arthur H. | 1 Barnard Street, Leederville | Premier 3½ H.P. Motorcycle | P 611 | Perth Municipality | 1916 |
| Roberts | C. | Dumbleyung | 3 H.P. Motorcycle | DU ● 12 | Dumbleyung Road Board | 1917-18 |
| Roberts | C. | C/o Garvey T. Redcliffe Road, Belmont | Morris-Cowley | 5856 | Metro Private Car | 1924-25 |
| Roberts | C. J. | Dandaragan | Napier 15 H.P. | DN ● 1 | Dandaragan Road Board | 1917-18 |
| Roberts | C. J. | Dandaragan | Napier 15 H.P. | DN ● 1 | Dandaragan Road Board | 1919 |
| Roberts | C. J. | Dandaragan | Dodge | DN ● 1 | Dandaragan Road Board | 1922-23 |
| Roberts | C. J. | Dandaragan | Dodge | DN ● 1 | Dandaragan Road Board | 1923-24 |
| Roberts | C. J. | Dandaragan | Columbia | DN ● 1 | Dandaragan Road Board | 1924-25 |
| Roberts | C. J. | Dandaragan | Columbia | DN ● 1 | Dandaragan Road Board | 1925-26 |
| Roberts | C. J. | Dandaragan | Columbia | DN ● 1 | Dandaragan Road Board | 1926-27 |
| Roberts | C. J. | Dandaragan | Columbia | DN ● 1 | Dandaragan Road Board | 1927-28 |
| Roberts | C. P. | Maroonah | Cycle | - | Ashburton Road Board | 1916 |
| Roberts | C. P. | Maroonah | 3¼ H.P. Motorcycle | AS ● 11 | Ashburton Road Board | 1917-18 |
| Roberts | C. P. | Marroonah | 3½ H.P. Motorcycle | AS ● 11 | Ashburton Road Board | 1919 |
| Roberts | C. P. | Onslow | Dodge | AS ● 66 | Ashburton Road Board | 1924-25 |
| Roberts | C. P. | 49 Saint George's Terrace, Perth | Chevrolet | 13152 | Metro Private Car | 1926-27 |
| Roberts | C. P. | 49 Saint George's Terrace, Perth | Chevrolet | 13152 | Metro Private Car | 1927-28 |
| Roberts | E & J. | Chidlow | Ford Truck | GE ● 42 | Greenmount Road Board | 1926-27 |
| Roberts | E. | Lawley Crescent | Studebaker 20 H.P. | ML 14 | Perth Road Board | 1915 |
| Roberts | E. | - | Studebaker | P ● 14 | Perth Road Board | 1919 |
| Roberts | E. | 397 Hay Street, Subiaco | Rugby | 7526 | Metro Private Car | 1925-26 |
| Roberts | E. | 56 Angove Street, North Perth | Ford | 13599 | Metro Private Car | 1926-27 |
| Roberts | E. & J. | Chidlow | Ford Truck | GE ● 82 | Greenmount Road Board | 1927-28 |
| Roberts | E. A. | 56 Angove Street, North Perth | Ford | 13599 | Metro Private Car | 1927-28 |
| Roberts | E. M. | 15 Arthur Street, West Perth | Ford Wagon | 10277 | Metro Hire or Trade | 1926-27 |
| Roberts | E. M. | 15 Arthur Street, West Perth | Ford Wagon | 10277 | Metro Hire or Trade | 1927-28 |
| Roberts | E. N. | Sandstone | Hupmobile 20 H.P. | BR ● 7 | Black Range Road Board | 1919 |
| Roberts | E. N. | Nanutarra Station, Onslow | Ford Truck | AS ● 21 | Ashburton Road Board | 1924-25 |
| Roberts | E. P. | Cunderdin | Ford | ME ● 273 | Meckering Road Board | 1926-27 |
| Roberts | E. P. | Cunderdin | Ford | ME ● 273 | Meckering Road Board | 1927-28 |
