| Williams | H. | Wyalkatchem | Chevrolet Truck | WM ● 190 | Wyalkatchem Road Board | 1926-27 |
| Williams | H. | Wickepin | Ford | WK ● 74 | Wickepin Road Board | 1927-28 |
| Williams | H. | 42 Mabel Street, North Perth | Buick | 10258 | Metro Hire or Trade | 1927-28 |
| Williams | H. D. | Goomalling | Ford 20 H.P. | GO 14 | Goomalling Road Board | 1916 |
| Williams | H. D. | Goomalling | Ford 18 H.P. | GO ● 14 | Goomalling Road Board | 1917-18 |
| Williams | H. F. W. | 12 Queenslea Drive, Claremont | Dodge | 817 | Metro Private Car | 1927-28 |
| Williams | H. Jr. | Cranbrook | Ford | CB ● 16 | Cranbrook Road Board | 1927-28 |
| Williams | H. N. | Toodyay | Morris Cowley | T ● 122 | Toodyay Road Board | 1927-28 |
| Williams | H. V. | Katanning | Ford | KA ● 103 | Katanning Toad Board | 1922-23 |
| Williams | H. V. | Katanning | Essex | KA ● 124 | Katanning Road Board | 1924-25 |
| Williams | H. V. | Katanning | Dodge | KA ● 124 | Katanning Road Board | 1925-26 |
| Williams | H. V. | Katanning | Ford | KA ● 211 | Katanning Road Board | 1926-27 |
| Williams | H. W. | Katanning | - | KA ● 124 | Katanning Road Board | 1923-24 |
| Williams | Henry | 32 Barker Road, Subiaco | Hudson | 1030 | Metro Private Car | 1923-24 |
| Williams | I. | Pindalup | Reo Wagon | MR ● 40 | Marradong Road Board | 1925-26 |
| Williams | I. | Carbarup | Studebaker | PL ● 60 | Plantagenet Road Board | 1925-26 |
| Williams | I. | Carbarup | Studebaker | PL ● 60 | Plantagenet Road Board | 1926-27 |
| Williams | I. | Pindalup | Reo Wagon | MR ● 40 | Marradong Road Board | 1926-27 |
| Williams | I. T. | Williams Road | Reo Truck | CO ● 126 | Collie Road Board | 1926-27 |
| Williams | Isaac | Mount Barker | Studebaker | PL ● 60 | Plantagenet Road Board | 1923-24 |
| Williams | Isaac | Mount Barker | Studebaker | PL ● 60 | Plantagenet Road Board | 1924-25 |
| Williams | Isaac | Mount Barker | Buick | PL ● 60 | Plantagenet Road Board | 1927-28 |
| Williams | J. | Ravensthorpe | Indian 8-10 H.P. Motorcycle | PR ● 6 | Phillips River Road Board | 1917-18 |
| Williams | J. | Goomalling | Dodge 25 H.P. | GO ● 32 | Goomalling Road Board | 1917-18 |
| Williams | J. | Goomalling | Dodge | GO ● 32 | Goomalling Road Board | 1924-25 |
| Williams | J. | York Road, Greenmount | Ford | 6943 | Metro Private Car | 1925-26 |
| Williams | J. | Lake Grace | Ford Truck | LG ● 28 | Lake Grace Road Board | 1925-26 |
| Williams | J. | Huiogine | Buick | GO ● 32 | Goomalling Road Board | 1925-26 |
| Williams | J. | York Road, Greenmount | Ford | 6943 | Metro Private Car | 1926-27 |
| Williams | J. | Hulogine | Buick | GO ● 32 | Goomalling Road Board | 1926-27 |
| Williams | J. | Lake Grace | Ford Truck | LG ● 28 | Lake Grace Road Board | 1926-27 |
| Williams | J. | York Road, Greenmount | Ford | 6943 | Metro Private Car | 1927-28 |
| Williams | J. | Lake Grace | Ford Truck | LG ● 28 | Lake Grace Road Board | 1927-28 |
| Williams | J. | Hulogine | Buick | GO ● 32 | Goomalling Road Board | 1927-28 |
| Williams | J. B. | Northampton | Buick | NR ● 120 | Northampton Road Board | 1925-26 |
| Williams | J. B. | Northampton | Buick | NR ● 120 | Northampton Road Board | 1926-27 |
| Williams | J. B. | Northampton | Buick | NR ● 7 | Northampton Road Board | 1927-28 |
| Williams | J. B. | Northampton | Dodge | NR ● 120 | Northampton Road Board | 1927-28 |
| Williams | J. F. | Merredin | Ford 20 H.P. | MRB 25 | Merredin Road Board | 1915 |
| Williams | J. F. | 51 First Avenue, Mount Lawley | Studebaker 20 H.P. | P 432 | Perth Municipality | 1919 |
| Williams | J. F. | - | Studebaker | P ● 432 | Perth Road Board | 1919 |
| Williams | J. F. | 51 1st Avenue, Mount Lawley | Studebaker | 3122 | Metropolitan Hire and Trade Cars | 1923-24 |
| Williams | J. F. | 51 First Avenue, Mount Lawley | Studebaker | 3122 | Metro Private Car | 1924-25 |
| Williams | J. G. | Allanson | Rugby | CO ● 158 | Collie Road Board | 1927-28 |
| Williams | J. J. | Carnarvon | Republic Truck | CN 57 | Carnarvon Municipal Council | 1924-25 |
| Williams | J. J. | Carnarvon | Republic Truck | CN 57 | Carnarvon Municipal Council | 1925-26 |
| Williams | J. J. | Carnarvon | Republic Truck | CN 57 | Carnarvon Municipal Council | 1926-27 |
| Williams | J. J. | Bridgetown | Ford Truck | B ● 182 | Bridgetown Road Board | 1927-28 |
| Williams | J. M. H. | Gabbin | Ford Truck | MM ● 61 | Mount Marshall Road Board | 1926-27 |
| Williams | J. M. H. | Gabbin | Ford Truck | MM ● 61 | Mount Marshall Road Board | 1927-28 |
