| Watson | Thos. | Shady Grove, Strawberry | AT1 | 1924 |
| Watson | V. H. | Gums, Calingiri | 0VW and 48B, 16A | 1962 |
| Watson | V. W. | Kynterne, Woodanilling | G6N and 57F, 10D | 1962 |
| Watson | W & P. D. | Glenroy, Bridgetown | EA7 | 1962 |
| Watson | W. | Ellan Vannin, Corrigin | 7DK | 1924 |
| Watson | W. H. | Loc.939, Carnamah | 9BN | 1924 |
| Watson | W. J. | Rosedale, Mundijong | N1W | 1912 |
| Watson | W. J. | Rosedale, Mundijong | N1W | 1924 |
| Watson | W. N. E. | Jandakot | W8O | 1924 |
| Watson | Walter | Southern Brook via Northam | WW3 | 1912 |
| Watson | Walter | Southern Brook, via Northam | WW3 | 1924 |
| Watson | William & Alex. | Glenroy, Grange Road, Bridgetown | EA7 | 1928 |
| Watson | William John | Watsonia Farm, Dumbleyung | W1W | 1926 |
| Watson | Wm. | Cricklewood via Northam | W1W | 1912 |
| Watson | Wm. | Faulkirk, P. O., Mooliabeenee | W4N | 1912 |
| Watson | Wm. | Yarramony, Northam | W4W | 1912 |
| Watson | Wm. | Rockville, Kojonup | 3WV | 1924 |
| Watson | Wm. | Cricklewood, via Northam | W1X | 1924 |
| Watson | Wm. | Faulkirk, P.O., Mooliabeenee | W4N | 1924 |
| Watson | Wm. | Yarramony, via Northam | W4W | 1924 |
| Watson & Co. | G. F. | Rocklea, Kondinin | GW9 and 9B, 117E | 1962 |
| Watson & Co. | N. | Avon 11161, 3497, 14799, 14961-2, 23347, Nungarin | NW2 and 28B, 50E | 1962 |
| Watson & King | - | Exmouth Gulf Station, Lyndon | 1XU | 1912 |
| Watson & King | - | Exmouth Gulf Station, Lyndon | 1XU | 1924 |
| Watson & Son | - | Eastfield Farm, Wagin East | GW8 | 1912 |
| Watson & Son | - | Eastfield Farm, Wagin East | GW8 | 1924 |
| 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 |
