| Couper | R. S. | Dakota, Albany | 3BC and 44B, 115E | 1962 |
| Couper | S. J. | 20112, Manmanning | C0J and 56F, 71B | 1962 |
| Couper | Thos. Alex | Black Range Mine, Sandstone | 8CT | 1924 |
| Couper & Son | G. T. | Donereil, Mt. Barker | G0T and 20A, 117B | 1962 |
| Courboules | J. M. & J. P. | Allowa, Corrigin | NP4 and 35B, 50E | 1962 |
| Court | Arthur H. | Loc. 1912, 15, 21/55, Dalwallinu | CU7 | 1912 |
| Court | Arthur H. | Locs. 1912, 15, 22/55 (Dalwallinu), Stables (Leonora). | CU7 | 1924 |
| Courthope | C. E. D. V. & H. | The Dell, Dardanup | DH9 and 24B, 38E | 1962 |
| Courthope | John | Meadow Farm, East Katanning | 5KC | 1924 |
| Courthope | John | Block 86, Yandanooka | Q5C | 1924 |
| Courthope | Susan | Moojelup, Cookernup | 2LC | 1912 |
| Courthope | Susan | Moojelup, Cookernup | 2LC | 1924 |
| Cousens | G. H. | Swan Loc. 2298/658, 2458/2683 & Chid. Lot 308, Chidlow | Z1N and 113A, 30B | 1962 |
| Cousens | W. E. | Loc. 54, Jandakot | WC8 | 1912 |
| Cousens | W. E. | Loc. 54, Jandakot | WC8 | 1924 |
| Cousin | A. H. | Hill View Farm, Arrino | 3HY | 1924 |
| Cousin | E. B. | Bythorne, Cunderdin | E8C and 71A, 19B | 1962 |
| Cousin | W. | Long Hill, Bejoording | WC0 | 1924 |
| Cousins | A. H. | Hill View Farm, Arrino | 3HY | 1912 |
| Cousins | A. M. | The Ranch Vandanook, Mingenew | 3HY and 1C, 29E | 1962 |
| Cousins | C. E. J. | Lot 1 and 2, Cannington | 6CA and 110B, 18E | 1962 |
| Cousins | G. | Orlean Farm, Bejoording | GV1 | 1924 |
| Cousins | G. N. G. | Woodford, Souther Cross | NC3 | 1912 |
| Cousins | G. N. G. | Woodford, Southern Cross | NC3 | 1924 |
| Cousins | Geo. | Orlean Farm, Bejoording | GV1 | 1912 |
| Cousins | H. | Gum Park, Dalwallinu | UC3 | 1924 |
| Cousins | I. R. | Winchester | YR4 | 1924 |
| Cousins | M. | Dellar Road, Gosnells | M9A and 67A, 117B | 1962 |
| Cousins | Mary A. | Yardorina, Irwin | MC5 | 1912 |
| Cousins | Mary A. | Yardarina, Irwin | MC5 | 1924 |
| Cousins | Michael | Quallup Brook, Kojonup | 7NK | 1924 |
| Cousins | Mrs A. E. | Kentwood, Moore Rvr. | C7G | 1924 |
| Cousins | Mrs. A. E. | Kentwood, Moore River | C7G | 1912 |
| Cousins | P. E. & M. | Damboring Rocks, Ballidu | 2PC and 36B, 117A | 1962 |
| Cousins | Percy Charles | Westcliffe, Greenfield, Boyup Brook | C7U | 1924 |
| Cousins | R. J. | Corondeen M 666-667-673, Calcarra | R3C and 36A, 12C | 1962 |
| Cousins | R. M. | Long Hill, Bejoording | WC0 and 5D, 84E | 1962 |
| Cousins | R. V. | Home Bush, Calcarra | C7C and 84E, 48D | 1962 |
| Cousins | T. G. & G. E. T. | Orlean Farm, Bejoording | GV1 and 19B, 11A | 1962 |
| Cousins | V. J. & B. E. | Melb. 926, Watheroo | B0V and 6C, 71E | 1962 |
| Cousins | W. | Long Hill, Bejoording, Newcastle | WC0 | 1912 |
| Cousins & Son | J. R. | Rosehill, Bulyee | LC6 and 45D, 30E | 1962 |
| Cousins & Sons | E. E. | Ningham 79, 99, 100, 1640, Pithara | UC3 and 16C, 27A | 1962 |
| Coutts | A. | Teabrook, Northam | A8C and 44A, 5B | 1962 |
| Coutts | Charlotte A. | Goodwood, Donnybrook | SS2 | 1924 |
| Coutts | J. G. | 1176 & 1177, Pingrup | J9G and 110B, 113E | 1962 |
| Coutts | Lilian C. | Goodwood Farm, Donnybrook | YC5 | 1924 |
| Coutts | R. | Kent 323-333, Pingrup | Y0C and 10C, 102E | 1962 |
| Coutts | R. P. | Goodwood, Donnybrook | 9RC | 1912 |
| Coutts | Robert | Donnybrook | Z7C | 1924 |
