| Cooper | J. | Rose Cottage Farm, Nabawa | 7KV and 3B, 15E | 1962 |
| Cooper | J. A. | Wellington Loc. 1053, Newlands | 3CX and 17A, 13C | 1962 |
| Cooper | J. B. | Uduc, Harvey | K0P | 1924 |
| Cooper | J. M. | Walkley, Sussex 1514, 1506, Kudardup | 9CV | 1962 |
| Cooper | J. M. | Boyanup 122-923, Elgin | J4C | 1962 |
| Cooper | J. W. | Hillsbro, Mullalyup | 8KO | 1962 |
| Cooper | Jack | Gabbin | 1JG | 1926 |
| Cooper | Joseph | Rose Cottage, Narra Tarra | 2CO | 1912 |
| Cooper | Joseph | Corn Hill, Marradong, Redcliffe, Pinjarra | CO2 | 1912 |
| Cooper | Joseph | Rose Cottage, Narra Tarra | 2CO | 1924 |
| Cooper | Joseph | Cornhill, Marradong, Redcliffe, Pinjarra | CO2 | 1924 |
| Cooper | Joseph H. | Mullalyup | 0UO | 1924 |
| Cooper | Joseph Wm. | Lots 116-17 AA, Uduc, Harvey | 4QJ | 1924 |
| Cooper | K. | Cloverdale, Gnowangerup | KC1 and 5D, 50E | 1962 |
| Cooper | L. C. | Harvey Downs, Harvey | 9OE | 1924 |
| Cooper | Louise | G.P.O., Merredin, c/o R. Grosse. | Q2T | 1925 |
| Cooper | M. (Mrs) | Redcliffe, Pinjarra | C02 and 30B, 6E | 1962 |
| Cooper | M. J. | Kojineerup, Mt. Barker | 2ZC | 1912 |
| Cooper | M. J. | Kojineerup, Mt. Barker | 2ZC | 1924 |
| Cooper | Mrs G. A. | East Kirup | XC6 | 1924 |
| Cooper | Mrs J. H. | Katoomba, Mullalyup | 8KO | 1924 |
| Cooper | N. H. | Stirling Plains, Mt. Barker | 2NC and 105A, 13C | 1962 |
| Cooper | P. M. | 2935, Mollerin | B2C and 44B, 39E | 1962 |
| Cooper | R. E. | Yautiyerup, Bremer Bay | RC9 and 44B, 39E | 1962 |
| Cooper | R. S. | Woodbine, Avon 14395, Welbungin | RC9 and 42C, 31E | 1962 |
| Cooper | Rose | Ayrton, Mandurah | U1C | 1912 |
| Cooper | Rose | Ayrton, Mandurah | U1C | 1924 |
| Cooper | Stuart A. | Knockvalla, Beverley | PQ1 | 1924 |
| Cooper | T. & J. | Green Estate, Mandurah, Ayrton Farm, Murray | T0J | 1912 |
| Cooper | T. & J. | Green Estate, Mandurah, Ayrton Estate, Murray | T0J | 1924 |
| Cooper | T. C. | Kikuya Loc. 10205, Walpole | CO4 | 1962 |
| Cooper | t. J. | Grassmere, Woogenillup | 1TC and 22C, 115E | 1962 |
| Cooper | T. J. & J. W. W. | Glencoe, Woogenillup, via Mt. Barker | T9J and 21A, 107B | 1962 |
| Cooper | Thomas H. | Naroo, Ashburton | UR0 | 1924 |
| Cooper | Thos. H. | Naroo, Ashburton | UR0 | 1912 |
| Cooper | Thos. H. | Lake Darlot | TQ0 | 1924 |
| Cooper | W. C. | Severn Grove, Beverley | EP8 | 1927 |
| Cooper | W. H. | Marble Bar | MS0 | 1912 |
| Cooper | W. H. | Marble Bar | MS0 | 1924 |
| Cooper | W. J. & R. T. | White Gully, Gabbin | 2WC and 26D, 115E | 1962 |
| Cooper | W. Jas. | Stramberry Hill Farm, Albany | 7CX | 1912 |
| Cooper | W. Jas. | Strawberry Hill Farm, Albany | 7CX | 1924 |
| Cooper | W. R. | Craiggieburn Orchard, Mundaring | T2V | 1924 |
| Cooper | W. R. | Craiggieburn Orchard, Mundaring | T2V | 1962 |
| Cooper | William John | Wellington Loc. 50, Lots 21 and 22, Wokalup | WG2 | 1926 |
| Cooper | Wm. | Talobia Station, Carnarvon | 4CX | 1924 |
| Cooper | Wm. | Brooklands, Youraling, via Beverley | Q1C | 1924 |
| Cooper & Co | P. | Kalaroo E. Pingelly | KC9 and 14C,80E | 1962 |
| Cooper & Son | D. B. | Swan Loc. 2698, Wanneroo | DC3 and 27D, 50E | 1962 |
| Cooper & Sons | N. & V. | Craigmyle, Dowerin | 1VC and 120A, 34C | 1962 |
