| Watson & Son | E. M. | Mannavale, Pingrup | E1W and 20D, 103E | 1962 |
| Watson & Son | F. | 14182, 14963, Nungarin | F7E and 43B, 15E | 1962 |
| Watson & Son | Mrs. Robert | The Brook, Boyerine via Wagin | UO2 | 1912 |
| Watson & Sons | A. & L. | Shady Grove, Strawberry | AT1 and 6D, 22E | 1962 |
| Watson Bros. | - | Beringbooding Downs, Bonnie Rock | 2BW and 50C, 41E | 1962 |
| Watt | A. & M. | Roe 1695, 1686, 1604, Lake King | 5WA and 44B, 21E | 1962 |
| Watt | A. R. | Broadacres, Koorda | 9AW and 29D, 17E | 1962 |
| Watt | A. V., A. E. & K. R. | THe Homestead, Cranbrook | 7WA and 33C, 17E | 1962 |
| Watt | Andrew | Farm, 13½ Mile, Upper Preston | Z3W | 1924 |
| Watt | C. O. | Geetabin, via Wickepin | W0E | 1912 |
| Watt | C. O. | Geetabin, via Wickepin | W0E | 1924 |
| Watt | C. W. | Coromin, via Doodlakine | CV5 | 1924 |
| Watt | E. V. (Miss) | Braidwood, Cranbrook | V5W and 31B, 33A | 1962 |
| Watt | J. C. | Malinmore, Kellerberrin | Q0W | 1924 |
| Watt | M. D. A. (Mrs) | Hilltop Riding School and Stud, Belmont Park | M1W and 67B, 23E | 1962 |
| Watt | P. J. | Amaroo, Mt. Many Peaks, Albany | 3WP and 13D, 38E | 1962 |
| Watt | R. H. | 1739-40 (Rapids Ward), Cowaramup | WR2 and 34B, 109E | 1962 |
| Watt | R. J. & E. B. | Carlingford, Peel Estate, South Fremantle | R6W and 16B, 111A | 1962 |
| Watt | V. H. S. | Braidwood, State Hut via Kojonup | V5W | 1912 |
| Watt | V. H. S. | Braidwood, State Hut, via Kojonup | V5W | 1924 |
| Watt Co. | B. H. | Malimore, Kellerberrin | L0L and 6C, 42E | 1962 |
| Watt Co. | J. T. | Paisley Park, Gabbin | G4W and 57F, 39D | 1962 |
| Watters | A. J. | Carnie, Greenhills | 8AW and 44C, 9A | 1962 |
| Watters | Charles | Carlow Farm, Narrogin | C2W | 1912 |
| Watters | Chas. | Carlow Farm, Narrogin | C2W | 1924 |
| Watters | Ernest | Subiaco Farm, Nokaning | 5EG | 1924 |
| Watters | H. J. | Tiffield, Perenjori | 1MJ and 22B, 34A | 1962 |
| Watterson | A. W. | 2 Herdsman Parade, Wembley | AW4 | 1962 |
| Watterson | J. | Laureston, Roelands | 4VF | 1924 |
| Watterson | W. F. & E. B. | Mirreen, Kuderup | WZ2 and 37D, 23E | 1962 |
| Watterson & Sons | R. M. | Glen Vale, Bonnie Doon, Burnley, Wamballup and Tenterden Lots 4, 5, 6, 11, 62, 562, 1165, 101, Gnowangerup | R6U and 44B, 36E | 1962 |
| Watts | A. | The Lynch, Northam. Mayfield, Meckering | AW5 | 1912 |
| Watts | A. | The Lynch, Northam, Mayfield, Meckering | AW5 | 1924 |
| Watts | A. | 21886, 20734, Bulyee, via Brookton | ZW8 and 21B, 103A | 1962 |
| Watts | A. E. | Loc. 1625, Witchcliffe | YJ2 | 1962 |
| Watts | A. H. G. S. | Wallacewood, Kojonup | S2O | 1912 |
| Watts | A. H. G. S. | Wallacewood. Kojonup | S2O | 1924 |
| Watts | A. J. | Glenowen, via Bannister | VW0 | 1924 |
| Watts | A. J. | 1018 Sea View Witchcliffe | SV5 | 1962 |
| Watts | A. K. | Kentucky, Coolup | 9AK | 1962 |
| Watts | A. S. | Taylor's Well, West Pingelly | 2LW | 1912 |
| Watts | A. S. | Taylor's Well, West Pingelly | 2LW | 1924 |
| Watts | A. S. | Whare Koa, Cunderdin | U1T and 33D, 43E | 1962 |
| Watts | Alfred E. | Ullawarra, Onslow | A3½W | 1912 |
| Watts | Alfred E. | Ullawarra, Onslow | A3W | 1924 |
| Watts | Alfred J. W. | Avon Loc. 18676, Kondinin | 1QX | 1925 |
| Watts | E. A. | Hill View Farm, West Pingelly | E1W | 1912 |
| Watts | E. A. | Hill View Farm, West Pingelly | E1W | 1924 |
| Watts | E. E. | Commonage, Narrogin | E2W | 1912 |
| Watts | E. E. | Commonage, Narrogin | E2W | 1924 |
