| Squiers | C. A. | Locs. 23393, 21869, 21745, South Quairading | 8SQ and 5B, 49E | 1962 |
| Squiers | David Chas. | Woodlands, Dangin | XS5 | 1924 |
| Squiers | Fred S. | Lease 6692/56, Kurrenkutten | 9SF | 1924 |
| Squiers | Geo. | Mt. Magnet | N1S | 1924 |
| Squiers | L. C. | A.1183 W.S.L.S. Gairdner River, Via Jerramungup | XS5 and 80B, 11A | 1962 |
| Squiers | Percival | Location No. 52 and 100, Wongan Hills | SQ4 | 1924 |
| Squiers | Rhoda | Rock Dale, Dangin | 8SQ | 1924 |
| Squiers | Walter | Homestead, Darkan | UD6 | 1924 |
| Squiers | Walter | Come Vale, Darkan | V5Z | 1924 |
| Squillace | A. | Laughing Waters, Harvey | 8AS and 7B, 35A | 1962 |
| Squire | G. R. | Kewarra, Coomerdale | UR4 and 42C, 15A | 1962 |
| Squire | W. R. | Hay Loc. 7429 Port 520 Greenvale Mt. Barker | SQ7 and 32C, 24E | 1962 |
| Squire & Son | F. L. | Mortigallup, Mt. Barker | 7GH and 34B, 23A | 1962 |
| Squire & Sons | M. | Devonleigh, Mukinbudin | SQ1 and 48D, 17E | 1962 |
| Squires | Geo. | Mt. Magnet | N1S | 1912 |
| Squires | K. G. & M. G. | 1 Lot 6, Upper Swan | 9KM and 28B, 12A | 1962 |
| St John | A. T. | Hazelmere, Kwolyin | T2J | 1924 |
| St John | Wm | Hazelwood, Ongerup | 0VJ | 1924 |
| St Joseph Girls Orphanage | - | Subiaco | OS8 | 1924 |
| St. Clair | W. | Brockway, Llanelly, Canning, Block No. 7078/55, Dorakin | 7LY | 1912 |
| St. Francis Xaviers Native Mission | - | Wandering Brook, Wandering Brook | 1FX and35D, 113E | 1962 |
| St. Jack | H. T. | Plantagenet 2048. 1404, 4383, 3057, Mt. Barker | UK5 and 48B, 29A | 1962 |
| St. Jack | R. N. & E. A. | Nockamany, York | 8RE and 118D, 31E | 1962 |
| St. Jack | Thos. Chas | Merriwaberup, Woogenellup | UK5 | 1924 |
| St. Jack & Sons | T. | Parts Avon 2982, 3024, 4756, and 10992, Rickerys Siding, via Green Hills | T6J and 3B, 33A | 1962 |
| St. Jacks & Sons | T. | Locs. 6501-2, Balkuling | 6BO and 39B, 17E | 1962 |
| St. John | A. T. | Hazlemere, Kwollyill | T2J | 1912 |
| St. John | P. F. & L. P. | Mallee Plains, Yuna | PS6 and 32B, 16E | 1962 |
| St. John | W. A> | Puriotta, Aldersyde | SJ4 and 7B, 14A | 1962 |
| St. Johns | Mary | Belmont Avenue, Belmont | 1SJ | 1928 |
| St. Joseph's Girls Orphanage | - | Subiaco | OS8 | 1912 |
| Stacey | A. F. | Croyden Springs and Avalon Downs, Mundi-Windi | SY9 and 44B, 4A | 1962 |
| Stacey | A. O. | Corry Lynn, Dowerin | 7SQ | 1924 |
| Stacey | C. | Murray 956, 1080, 1342, Waroona | 5CS and 34C, 12E | 1962 |
| Stacey | C. F. | 563, Somerset Hill, Via Denmark | CS6 | 1962 |
| Stacey | Frederick Arthur | Kurrajong, Tambellup | 9OB | 1924 |
| Stacey | H. J. | Arralea, Arrino | CS9 and 44C, 4E | 1962 |
| Stacey | J. | Loc. 503 Kuldana, Moorine Rock | SJ7 and 28C, 71E | 1962 |
| Stacey | Jas. | Quairading | S1F | 1912 |
| Stacey | Jas. | Quairading | S1F | 1924 |
| Stacey | John B. | Dumen Farm, Southern Cross | 8ST | 1912 |
| Stacey | John B. | Dumen Farm, Southern Cross | 8ST | 1924 |
| Stacey | K. & D. | Jalborragup, Nannup | 8KS and 117B, 48A | 1962 |
| Stacey | L. J. | Sunnyvale, Quairading | S1F and 30B, 26A | 1962 |
| Stacey | N. | Avon 17193-4, Narembeen | 7NT and 29B, 111A | 1962 |
| Stacey | P. N. | Victoria Loc. 8917, Buntine | R5J and 6B, 80E | 1962 |
| Stacey | T. P. | Loc. 57, 125, Bodallin | TS2 and 55F, 42B | 1962 |
| Stacey Bros. | - | Murry Vale, Waroona | 3SZ and 39B, 24E | 1962 |
| Stack | Thos.Pascoe | Longwood, Harvey | K2U | 1924 |
| Stack | Wm. & Junior | Farm, Burracoppin | Q7S | 1924 |
