| Harper | Frank E. | Dongarra Hotel, Dogarra | Z8E | 1924 |
| Harper | H . | Woodbridge, Rocky Gully | CH5 and 1C, 32A | 1962 |
| Harper | H. | Burlong Run, Northam | 8HN | 1912 |
| Harper | H. | Burlong Run, Northam | 8HN | 1924 |
| Harper | J . | Wandwindup (6310, 7398, 7442), Kojonup | OH6 and 39C, 28E | 1962 |
| Harper | N . W . | Thornlie, Kenwick | 0NH | 1962 |
| Harper | N. W. | Stoney Crossing, E. Brookton | N1H | 1912 |
| Harper | S . B . | Loc. 127, Nungarin | 5SU | 1962 |
| Harper | Sophy | N. D. Hotel, North Dandalup | SH9 | 1912 |
| Harper | Sophy | North Dandalup Hotel, North Dandalup | SH9 | 1924 |
| Harper & Co. | S . C . | Plant. 6026, Albany | S6H and 46C, 84E | 1962 |
| Harper & Co. | S . J . | Plant 5247, Youngs Siding via Albany | H2C and 60F, 36B | 1962 |
| Harper & Grasby, Catton | Chas. & W. | Ferndale, Baligup | HF2 | 1924 |
| Harper Bros. | - | Koorian, Gingin | 3HK | 1912 |
| Harper Bros. | - | Koorian, Gingin | 3HK | 1924 |
| Harridge | W. | Ballidu | 7VK | 1924 |
| Harries | W . M . & D . E . | Malvern Farm, Busselton | HT2 | 1962 |
| Harrington | C . M . | Wellington 2580-4-5, Darkan | CH1 and 4B, 43A | 1962 |
| Harrington | E . W . | Part 403, 727, 1537 Sussex, Margaret River | E9W and 29B, 67A | 1962 |
| Harrington | John W. | Avon Locs. 18326 and 24574, Narembeen | QX4 | 1925 |
| Harrington | K . M . | Sussex Locs. 2203, 2205, Cowaramup | YK2 | 1962 |
| Harrington | K . M . & R . A . | 3731, Regans Ford via Gingin | KH1 and 16D, 19E | 1962 |
| Harrington | L . V . | Tralee, Miling | VL1 and 102E, 47D | 1962 |
| Harrington | N . E . | Martinjinni, Miling | 5NH and 112A, 16B | 1962 |
| Harrington | R . D . & D . M . | White Dam, Wyening | W0H and 43B, 47E | 1962 |
| Harrington | W. | Ardatt, Newcastle | W0H | 1912 |
| Harrington | W. | Ardatt, Toodyay | W0H | 1924 |
| Harrington & Co. | B . M . | Lynmari, Darkan | S0B and 18D, 102E | 1962 |
| Harrington & Co. | G . J . | Loc. 926, M 2008, Miling | GH4 and 11B, 27E | 1962 |
| Harrington & Sons | A . M . | Kialla, Miling | BJ6 and 67E, 30D | 1962 |
| Harrinton | S . C . | Ning. Loc. 704, 1534, 1537, Damboring | HH6 and 107B, 46A | 1962 |
| Harris | A . A . | Wheatfield, West Wagin | AH4 and 13C, 5A | 1962 |
| Harris | A . C . | Quarry View, Maddington | 1HS and 41A, 50C | 1962 |
| Harris | A . C . | Ning. Loc. 2901, Kalannie | A6H and 45D, 39E | 1962 |
| Harris | A . H . R . | Nug. A .A. 36 Victoria Loc. 4296, Dalwallinu | K5H and 84D, 47E | 1962 |
| Harris | A . J . (jnr) | 1937, 2015, 3028, 14, 15, 12, 21, 67, Dalwallinu | J1H and 10D, 25E | 1962 |
| Harris | A . K . | Field Springs, Jarrahdale | KH5 | 1962 |
| Harris | A . M . | Kartanarra, Katanning | HK5 and 16B, 46A | 1962 |
| Harris | A . R . | Nammen, Gingin | 0CT and 50C, 32A | 1962 |
| Harris | A . R . & R . A . | Lake View Farm, Minnivale | H6B and 9B, 41E | 1962 |
| Harris | A. J. | Melbourne Loc. 1905, Dalwallinu | K5H | 1924 |
| Harris | Alan Medlo | North Gnowangerup | HN0 | 1927 |
| Harris | Alfred | Ear Gully, Mingenew | D6H | 1912 |
| Harris | Alfred | Ear Gully, Mingenew | D6H | 1924 |
| Harris | Alfred E. | Montegiore, Lake Yealering | A04 | 1924 |
| Harris | Alfred E. | Parkestown, via Kalgoorlie | E9K | 1924 |
| Harris | Alfred J. | Dalwallinu | J1H | 1927 |
| Harris | Alice Louise | Narrikup | L6K | 1924 |
| Harris | Andrew A. | Wheatfield, Wagin East | XE2 | 1924 |
| Harris | Arthur E. | Dudinin, via Narrogin | 0EU | 1924 |
