| Watson | A. | Boulder No. 1 | Chevrolet Truck | K ● 41 | Kalgoorlie Road Board | 1927-28 |
| Watson | A. | Boulder No. 1 | Oldsmobile | K ● 110 | Kalgoorlie Road Board | 1927-28 |
| Watson | A. A. | Balmoral Street, Victoria Park | Chevrolet | 8526 | Metro Private Car | 1925-26 |
| Watson | A. A. | Balmoral Street, Victoria Park | Chevrolet | 8526 | Metro Private Car | 1926-27 |
| Watson | A. A. | Balmoral Street, Victoria Park | Chevrolet | 8526 | Metro Private Car | 1927-28 |
| Watson | A. D. | Jennapullin | Ford | N ● 49 | Northam Road Board | 1922-23 |
| Watson | A. D. | Jennapullin | Ford | N ● 49 | Northam Road Board | 1923-24 |
| Watson | A. D. | Jennapullin | Ford | N ● 49 | Northam Road Board | 1924-25 |
| Watson | A. D. | Jennapullin | Ford | N ● 49 | Northam Road Board | 1925-26 |
| Watson | A. J | Williams | Chevrolet | WL ● 54 | Williams Road Board | 1926-27 |
| Watson | A. J. | Williams | Ford | WL ● 28 | Williams Road Board | 1923-24 |
| Watson | A. J. | Mount Magnet | Dodge | MA ● 29 | Mount Magnet Road Board | 1923-24 |
| Watson | A. J. | Mount Magnet | Dodge | MA ● 29 | Mount Magnet Road Board | 1924-25 |
| Watson | A. J. | Williams | Ford | WL ● 28 | Williams Road Board | 1924-25 |
| Watson | A. J. | Williams | Chevrolet | WL ● 54 | Williams Road Board | 1925-26 |
| Watson | A. J. | Yoweragabbie | Dodge | MA ● 9 | Mount Magnet Road Board | 1925-26 |
| Watson | A. J. | Yoweragabbie Station | Dodge | MA ● 29 | Mount Magnet Road Board | 1925-26 |
| Watson | A. J. | Yoweragabbie | Dodge | MA ● 9 | Mount Magnet Road Board | 1926-27 |
| Watson | A. J. | Yoweragabbie Station | Dodge | MA ● 29 | Mount Magnet Road Board | 1926-27 |
| Watson | A. J. | Yoweragabbie | Dodge | MA ● 9 | Mount Magnet Road Board | 1927-28 |
| Watson | A. J. | Yoweragabbie Station | Dodge | MA ● 29 | Mount Magnet Road Board | 1927-28 |
| Watson | A. J. | Williams | Chrysler | WL ● 54 | Williams Road Board | 1927-28 |
| Watson | AJ. | Williams | Ford | WL ● 28 | Williams Road Board | 1922-23 |
| Watson | Alex John | Mount Magnet | Ford | MA ● 9 | Mount Magnet Road Board | 1923-24 |
| Watson | Alexander | Mount Magnet | Ford | MA ● 21 | Mount Magnet Road Board | 1922-23 |
| Watson | Alfred | P.O. Midland Junction | Humber 10 H.P. | SW ● 2 | Swan Road Board | 1919 |
| Watson | Alfred | Perseverance G.M | Ford | K ● 11 | Kalgoorlie Road Board | 1927-28 |
| Watson | Arthur | 48 King George Street, Victoria Park | Overland | 8397 | Metro Private Car | 1927-28 |
| Watson | B. M | Northam | Ford | N ● 177 | Northam Road Board | 1927-28 |
| Watson | C. | Kununoppin | Chevrolet Truck | KTY ● 148 | Kununoppin-Trayning Road Board | 1926-27 |
| Watson | C. | Kununoppin | Chevrolet Truck | KTY ● 148 | Kununoppin-Trayning Road Board | 1927-28 |
| Watson | C. H. | 12 Bernard Street, Claremont | Citroen | 9561 | Metro Private Car | 1926-27 |
| Watson | C. H. | 12 Bernard Street, Claremont | Citroen | 9561 | Metro Private Car | 1927-28 |
| Watson | C. I | - | Pontiac | MW ● 104 | Mullewa Road Board | 1927-28 |
| Watson | Chas. | 9 Kingston Avenue, West Perth | Morris Oxford | 5687 | Metro Private Car | 1927-28 |
| watson | Clarence | 66 South Street, Fremantle | B.S.A. & Sidecar | 1361 | Metro Motorcycle | 1922-23 |
| Watson | D. | Jennapullin | Dodge | N ● 131 | Northam Road Board | 1925-26 |
| Watson | E. | 11 Montreal Road, West Midland | Birmingham Small Arms Co | 6914 | Metro Private Car | 1925-26 |
| Watson | E. | Holmesdale Road, West Midland | B.S.A. | 6914 | Metro Private Car | 1926-27 |
| Watson | E. | Holyoake | Chevrolet Truck | MY ● 211 | Murray Road Board | 1926-27 |
| Watson | E. | Shackleton | Overland | BK ● 211 | Bruce Rock Road Board | 1927-28 |
| Watson | E. | Holyoake | Chevrolet Truck | MY ● 211 | Murray Road Board | 1927-28 |
| Watson | E. W. | Northam | Chevrolet | N ● 254 | Northam Road Board | 1927-28 |
| Watson | Ernest | Milly Station | Ford | MA ● 4 | Mount Magnet Road Board | 1925-26 |
| Watson | F. | Jennapullin | Buick | N ● 194 | Northam Road Board | 1926-27 |
| Watson | F. A. | 73 Mackie Street, Victoria Park | Citroen | 6404 | Metro Private Car | 1924-25 |
| Watson | F. A. | 73 Mackie Street, Victoria Park | Citroen | 6404 | Metro Private Car | 1925-26 |
| Watson | F. A. | 73 Mackie Street, Victoria Park | Citroen | 6404 | Metro Private Car | 1926-27 |
| Watson | F. J. | Forest Grove | Ford | AU ● 67 | Augusta Road Board | 1926-27 |
| Watson | F. J. | Forest Grove | Ford | AU ● 67 | Augusta Road Board | 1927-28 |
