| Harrison | R. | Mandiga | Dodge | NG ● 23 | Ningham Road Board | 1922-23 |
| Harrison | R. | Criterion Hotel, Perth | Chevrolet | 2386 | Metro Private Car | 1922-23 |
| Harrison | R. | Mandiga | Dodge | MM 14 | Mount Marshall Road Board | 1924-25 |
| Harrison | R. | Mandiga | Dodge | MM ● 14 | Mount Marshall Road Board | 1925-26 |
| Harrison | R. | Fitzgerald Street, Geraldton | Ford | GN 67 | Geraldton Municipality | 1926-27 |
| Harrison | R. | Mandiga | Dodge | MM ● 14 | Mount Marshall Road Board | 1926-27 |
| Harrison | R. | Mandiga | Dodge | MM ● 14 | Mount Marshall Road Board | 1927-28 |
| Harrison | R. C. | Criterion Hotel | Ford 20 H.P. | P 1089 | Perth Municipality | 1919 |
| Harrison | R. C. | Rockingham | Chevrolet | RO ● 1 | Rockingham Road Board | 1923-24 |
| Harrison | R. C. | Rockingham | Ford Truck | RO ● 12 | Rockingham Road Board | 1923-24 |
| Harrison | Reginald | Wellington Buildings | F.N. 2¾ H.P. Motorcycle | P 903 | Perth Municipality | 1916 |
| Harrison | S. P. V. | 11 Francis Street, Subiaco | Reo Wagon | 3501 | Metro Private Car | 1924-25 |
| Harrison | Sydney | Milledon | Hupmobile | SW ● 83 | Swan Road Board | 1926-27 |
| Harrison | Sydney | Millendon | Hupmobile | SW ● 83 | Swan Road Board | 1927-28 |
| Harrison | Sydney | Herne Hill | Chevrolet Truck | SW ● 112 | Swan Road Board | 1927-28 |
| Harrison | T. | Mingenew | Chevrolet | MI ● 36 | Mingenew Road Board | 1925-26 |
| Harrison | T. | Mingenew | Chevrolet | MI ● 36 | Mingenew Road Board | 1926-27 |
| Harrison | T. | Mingenew | Chevrolet | MI ● 36 | Mingenew Road Board | 1927-28 |
| Harrison | T. | Denmark | Chevrolet Truck | DE ● 59 | Denmark Road Board | 1927-28 |
| Harrison | T. H. | Doodlakine | Rugby | KE ● 147 | Kellerberrin Road Board | 1925-26 |
| Harrison | T. H. | Doodlakine | Rugby | KE ● 147 | Kellerberrin Road Board | 1926-27 |
| Harrison | T. H. | Doodlakine | Rugby | KE ● 147 | Kellerberrin Road Board | 1927-28 |
| Harrison | T. P. | Greenough | Chevrolet | GH ● 22 | Greenough Road Board | 1924-25 |
| Harrison | T. T. | Greenough | Chevrolet | GH ● 41 | Greenough Road Board | 1925-26 |
| Harrison | T. T. | Greenough | Chevrolet | GH ● 41 | Greenough Road Board | 1926-27 |
| Harrison | T. T. | Utacarra, Geraldton | Chevrolet | GN 71 | Geraldton Municipality | 1927-28 |
| Harrison | T. T. | Greenough | Chevrolet | GH ● 41 | Greenough Road Board | 1927-28 |
| Harrison | Thomas. T. | Greenough | Chevrolet | GH ● 22 | Greenough Road Board | 1923-24 |
| Harrison | W. | Dumbleyung | Overland | DU ● 46 | Dumbleyung Road Board | 1925-26 |
| Harrison | W. | 306 Hampton Road, Fremantle | Chevrolet | 12272 | Metro Private Car | 1926-27 |
| Harrison | W. | Dumbleyung | Overland | DU ● 46 | Dumbleyung Road Board | 1926-27 |
| Harrison | W. | Geraldton | Chevrolet | GN 26 | Geraldton Municipality | 1926-27 |
| Harrison | W. | 306 Hempton Road, Fremantle | Chevrolet | 12272 | Metro Private Car | 1927-28 |
| Harrison | W. | Kellerberrin | Chevrolet | KE ● 104 | Kellerberrin Road Board | 1927-28 |
| Harrison | W. | Dumbleyung | Overland | DU ● 46 | Dumbleyung Road Board | 1927-28 |
| Harrison | W. E. | Hardy Street, Hollywood | Morris-Cowley | 13846 | Metro Private Car | 1926-27 |
| Harrison | W. E. | 323 Onslo Road, West Subiaco | Morris Cowley | 13846 | Metro Private Car | 1927-28 |
| Harrison | W. H. | 12 Rockton Road, Claremont | Chevrolet | 11404 | Metro Private Car | 1927-28 |
| Harrison | W. S. | Denmark | Dodge | DE ● 43 | Denmark Road Board | 1927-28 |
| Harrison | Wm. Ed | 256 Perth Street, Subiaco | Indian | 1097 | Metro Motorcycle | 1922-23 |
| Harrison & Blechynden | W. & A. | Mount Kokeby | Chevrolet 20 H.P. | BE ● 62 | Beverley Road Board | 1917-18 |
| Harrison & Blechyndne | W. & A. | Mount Kokeby | Chevrolet 20 H.P. | BE ● 52 | Beverley Road Board | 1919 |
| Harrison & Co | - | Broomehill | Chevrolet Truck | BH ● 105 | Broomehill Road Board | 1927-28 |
| Harrison & Co | H. C. | Broomehill | Pontiac | BH ● 119 | Broomehill Road Board | 1927-28 |
| Harrison & Sons | - | Benjaberring | - | WM ● 256 | Wyalkatchem Road Board | 1926-27 |
| Harrison & Sons | - | Benjaberring | Austin | WM ● 338 | Wyalkatchem Road Board | 1927-28 |
| Harrison Bros | - | Benjaberring | Ford | WM ● 169 | Wyalkatchem Road Board | 1925-26 |
| Harrison Bros | - | Benjaberring | Ford | WM ● 169 | Wyalkatchem Road Board | 1927-28 |
| Harrison Ramsay Ltd | - | AMP Chambers, Perth | Morris-Cowley | 9350 | Metro Private Car | 1926-27 |
| Harrison Ramsay Ltd | - | A.M.P. Chambers, Perth | Morris-Cowley | 9350 | Metro Private Car | 1927-28 |
