| Thomas | J. | Grazier | Northampton | 1889 | WA Almanack |
| Thomas | J. | | Edward Street, Fremantle | 1897 | Witton's Directory |
| Thomas | J. | | Mandurah Road, Fremantle | 1897 | Witton's Directory |
| Thomas | J. | | Victoria Avenue, North Fremantle | 1897 | Witton's Directory |
| Thomas | J. | Carpenter | Karridale | 1897 | Witton's Directory |
| Thomas | J. | Farmer | Ludlow | 1897 | Witton's Directory |
| Thomas | J. C. | Barman | Fremantle | 1881 | WA Almanack |
| Thomas | J. C. | Farmer | Rockingham | 1897 | Witton's Directory |
| Thomas | J. F. | Farmer | Murray & Serpentine | 1877 | WA Almanack |
| Thomas | J. F. | Farmer | Murray | 1880 | WA Almanack |
| Thomas | J. F. | Farmer | Mandurah | 1897 | Witton's Directory |
| Thomas | J. H. | Government Engineer | Perth | 1877 | WA Almanack |
| Thomas | J. H. | Director Public Works | Perth | 1878 | Herald Almanack |
| Thomas | J. H. | Com. Railways?and Public Works | Perth | 1879 | Herald Almanack |
| Thomas | J. H. | Director Public Works | Perth | 1879 | WA Almanack |
| Thomas | J. H. | Commissioner Railways & Public Works | Perth | 1880 | Herald Almanack |
| Thomas | J. H. | Director of Public Works | Perth | 1880 | WA Almanack |
| Thomas | J. H. | Commissioner of Railways & Public Works | Perth | 1881 | Herald Almanack |
| Thomas | J. H. | Commissioner of Railways | Perth | 1882 | Herald Almanack |
| Thomas | J. H. | Commissioner Railways | Perth | 1883 | Herald Almanack |
| Thomas | J. H. | Commisioner of Railways | Perth | 1884 | Herald Almanack |
| Thomas | J. H. | Grocer | 66 Murray Street, Perth | 1897 | Witton's Directory |
| Thomas | J. L. | Farmer | Boyadine | 1897 | Witton's Directory |
| Thomas | J. L. | Farmer | Talbot | 1897 | Witton's Directory |
| Thomas | J. R. | | William Street, Beaconsfield | 1897 | Witton's Directory |
| Thomas | J. T. | Restaurant Keeper | 171 William Street, Perth | 1897 | Witton's Directory |
| Thomas | J. W. | Farmer | Rockingham | 1897 | Witton's Directory |
| Thomas | J. W. | Forwarding Agent | Southern Cross | 1897 | Witton's Directory |
| Thomas | J.F. | Farmer | Murray & Serpentine | 1876 | WA Almanack |
| Thomas | J.L. | Farmer | Springdell, Beverley | 1897 | Witton's Directory |
| Thomas | James | Farmer (Rockingham) | Fremantle | 1879 | WA Almanack |
| Thomas | James | Farmer | Fremantle (Rockingham) | 1880 | WA Almanack |
| Thomas | James | Frmr. | Fremantle (Rockingham) | 1882 | WA Almanack |
| Thomas | James | Farmer | Fremantle (Rockingham) | 1883 | WA Almanack |
| Thomas | James | Farmer | Fremantle (Rockingham) | 1886 | WA Almanack |
| Thomas | James. | Farmer | Fremantle (Rockingham) | 1881 | WA Almanack |
| Thomas | James. | Farmer | Busselton, Blackwood &c. | 1881 | WA Almanack |
| Thomas | Jas. | Householder | Fremantle | 1875 | Herald Almanack |
| Thomas | Jas. | Householder | Fremantle | 1875 | WA Almanack |
| Thomas | Jas. | Farmer | Fremantle (Rockingham) | 1876 | Herald Almanack |
| Thomas | Jas. | Householder | Fremantle | 1876 | Herald Almanack |
| Thomas | Jas. | Farmer | Fremantle (Rockingham) | 1877 | Herald Almanack |
| Thomas | Jas. | Householder | Fremantle | 1877 | Herald Almanack |
| Thomas | Jas. | Householder | Fremantle | 1878 | Herald Almanack |
| Thomas | Jas. | Farmer | Busselton, Blackwood, &c. | 1880 | WA Almanack |
| Thomas | Jas. | Sawyer | Busselton, Etc. (Augusta, Etc., Karridale, Boranup & Hamlin) | 1889 | WA Almanack |
| Thomas | Jas. H. | Director of Public Works | Perth | 1881 | WA Almanack |
| Thomas | Jas. H. | Director of Public Works | Perth | 1882 | WA Almanack |
| Thomas | Jas. H. | Director of Public Works | Perth | 1883 | WA Almanack |
| Thomas | Jas. H. | Director of Public Works | Perth | 1884 | WA Almanack |
