| Watson | Laurie Robt. | Glenlowie, Boyerine Siding | LR4 | 1924 |
| Watson | M. C. S. | Glen-Avon, Aldersyde | EZ9 and 102D, 20E | 1962 |
| Watson | Mrs Robt. & Son | The Brook, Boyerine, via Wagin | UO2 | 1924 |
| Watson | Mrs. I. C. | Brangee Park, Pinegelly | 6WN | 1912 |
| Watson | N. | Locs. 111-2, Newdegate | NW0 and 39B, 67A | 1962 |
| Watson | O. D. | Nortonvale, Mt. Barker | OW2 and 33C, 31A | 1962 |
| Watson | O. N. | Plantagenet Loc. 79 Upper King River, via Albany | NW0 and 36B, 31E | 1962 |
| Watson | P. J. | Mundrabilla, Forrest | Q1W | 1924 |
| Watson | P. N. | H.F. 8779/74, Wickepin | PW4 | 1912 |
| Watson | P. N. | H. F. 8779/74, Wickepin | PW4 | 1924 |
| Watson | R. A. | Red Hills, Carnamah | 6RE and 16C, 116A | 1962 |
| Watson | R. G. | Ulva, Cuballing | F2O and 40D, 42E | 1962 |
| Watson | R. J. | Lakeside Apairy, Mandurah | R4W and 25D, 43E | 1962 |
| Watson | R. J. | Brooklyn, Wyening | WO7 and 23D, 113E | 1962 |
| Watson | R. W. | Bridlington Farm, Katanning | WW7 | 1912 |
| Watson | R. W. | Bridlington Farm, Katanning | WW7 | 1924 |
| Watson | R. W. | Canning Loc. 32 (plan 4850), Roleystone | 0WR and 48D, 43E | 1962 |
| Watson | Robt. | Marble Bar | WL6 | 1912 |
| Watson | Robt. | Marble Bar | WL6 | 1924 |
| Watson | S. J. | Yarradagee, Strawberry | SJ0 | 1912 |
| Watson | S. J. | Yarragadee, Strawberry | SJ0 | 1924 |
| Watson | S. R. & P. S. | Hill View, Kukerin | 4SW and 9D, 28E | 1962 |
| Watson | T. | Farm, Wagin | NW9 | 1924 |
| Watson | T. C. S. | Glen Avon Farm, Aldersyde, East Brookton | EZ9 | 1926 |
| 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 |
