| Mortimer | R. W. | Loc. 18170, Wadderin Roadside, via Bruce Rock | 4NY | 1924 |
| Mortimer | W. J. | Lot 62 Peel Estate, Wellard | D7J | 1962 |
| Mortimer | William | Ninghan Locs. 535-6, Ninghan | 5XV | 1924 |
| Mortimer Bros. | (R. W. & K. R.) | Victoria 10026, Mingenew | 4MB and 35B, 114E | 1962 |
| Mortimore | F. P. | Wellington Loc. 2537, Donnybrook | UN4 | 1924 |
| Mortimore | J. M. & R. W. | Leyland, Babakine | MQ3 | 1924 |
| Mortimore | R. E | 18322, Narembeen | IM0 and 7A, 27B | 1962 |
| Mortimore | R. W. | Avon Loc. 18170, 18167, Narembeen | 4NV and 37D, 36E | 1962 |
| Morton | A. | Loc. 11907/8, Trayning | MN3 | 1962 |
| Morton | A. C. | Duna, Corrigin | WX5 and 104D, 14E | 1962 |
| Morton | A. F. | A. 1224, Gairdner River | 5MA and 53F, 9B | 1962 |
| Morton | Alan | Salmon Gums, via Esperance | 4NO | 1924 |
| Morton | Alan | Fitzgerald Loc. 781, Salmon Gums | Q1V | 1924 |
| Morton | Alex | Hall's Creek | ZO6 | 1924 |
| Morton | H. K. | Loc. 8105/56, Jitarning | KS0 | 1926 |
| Morton | J. A. | 7351, 7085, 8739, 4491, 975, Marchagee | M2J and 22C, 113E | 1962 |
| Morton | J. E. | Homestead Farm, Willie Willie, Baker's Hill | M4J | 1912 |
| Morton | J. E. | Homestead Farm, Willie Willie, Baker's Hill | M4J | 1924 |
| Morton | James | Loc. 14270, Trayning | 5ZJ | 1924 |
| Morton | L. T. | Karara Station, Perenjori | LM2 and 48D, 16E | 1962 |
| Morton | M. C. | Greenvale Loc. W.4247, W.4360, Mornington Mills | 5MC | 1962 |
| Morton | Margaret | Morphylton, Kodj Kodjin, Trayning | N3X | 1924 |
| Morton | Mary | Commonage, Mingenew | 7YE | 1924 |
| Morton | Pearl | Victoria Loc. 5627, Marchagee | ZM5 | 1924 |
| Morton | V. A. | Brooklands, Mornington Mills | FM0 | 1962 |
| Morton | V. A. | Rotheay, Perenjori | KS1 and 48B, 17E | 1962 |
| Morton | W. H. | Locs. 3976-7, 4635, 3948-9, West Wubin | DN3 and 35B, 39E | 1962 |
| Morton | W. McC. | A.718A, Northcliffe | 8WX | 1962 |
| Morton | William H. | Lots 481 and 515, Denmark | M2Q | 1924 |
| Morton & Son | E. A. | Belconon, Bendering | 3XM and 38A, 49B | 1962 |
| Morton Bros. | - | Typiup, Kodj Kodjin | 2BM | 1912 |
| Morton Bros. | - | Typiup, Kodj Kodjin | 2BM | 1924 |
| Moseley | G. F. R. & M. I. | Sanlaw Park, Gidgegannup | M9V and 34D, 15E | 1962 |
| Moseley & Co. | G. O. | Mt. Sandiman Station, Carnarvon | C0D and 4C, 80A | 1962 |
| Moses | A. G. | Windsor Station, East Mt. Magnet | 5GM | 1912 |
| Moses | A. G. | Windsor Station, East Mount Magnet | 5GM | 1924 |
| Moses | R. G. | Town Block, mt. Magnet | 3RM and 117B, 42A | 1962 |
| Moses | Robt. Geo. | Loc 15200, Newcarnie | OZ2 | 1924 |
| Moskivita | Bralich Kargotich | Locs. 1773 and 3064-6, Bullsbrook | 2QQ | 1924 |
| Mosley | James | Moneripin, York | J4Y | 1924 |
| Mosley | William H. | Interent, Hall's Creek | 4XX | 1924 |
| Moss | A. G. | Marland Hill, Cullham | M0V and 50D, 33E | 1962 |
| Moss | A. J. | Redfern Loc. Nos. 3151, 2666, Karridale | MO7 | 1962 |
| Moss | Edward | Koogan Siding | E1M | 1912 |
| Moss | Edward | Koogan Siding | E1M | 1924 |
| Moss | Eliz. May | Jarnadup Mills, Jarnadup | O7K | 1924 |
| Moss | Ernest | Pinjarra | N3E | 1924 |
| Moss | Frank A. | Quandadine Farm, Kweda Siding, via Brookton | QJ1 | 1924 |
| Moss | Geo | Fraser River and Jurgarra Creek, Broome | UX0 | 1924 |
| Moss | Geo. | Fraser River and Jurgurra Creek Broome | UX0 | 1912 |
