| Johnston | G. | Miller & Farmer | Guildford | 1877 | Herald Almanack |
| Johnston | G. | Miller & Farmer | Guildford | 1878 | Herald Almanack |
| Johnston | G. | Boatman | Fremantle | 1884 | Herald Almanack |
| Johnston | G. | | Bunbury | 1897 | Witton's Directory |
| Johnston | Geo. R. | Architect & Surveyor | Alpha Chambers, 53 Howick Street, Perth | 1897 | Witton's Directory |
| Johnston | H. | Blacksmith | Toodyay | 1876 | Herald Almanack |
| Johnston | H. | Blacksmith | Toodyay | 1877 | Herald Almanack |
| Johnston | H. | Blacksmith | Toodyay | 1877 | WA Almanack |
| Johnston | H. | Clerk | Bunbury | 1897 | Witton's Directory |
| Johnston | H. A. | | Bronte Street, Perth | 1897 | Witton's Directory |
| Johnston | H. F. | Surveyor | Perth | 1877 | WA Almanack |
| Johnston | H. F. | Surveyor | Perth | 1878 | Herald Almanack |
| Johnston | H. F. | Survey Office | Perth | 1879 | Herald Almanack |
| Johnston | H. F. | Survey Office | Perth | 1880 | Herald Almanack |
| Johnston | H. F. | Survey Office | Perth | 1881 | Herald Almanack |
| Johnston | H. F. | Surveyor | Victoria District (Geraldton) | 1884 | WA Almanack |
| Johnston | H. W. W. | Sheep Farmer | Geraldton | 1885 | Herald Almanack |
| Johnston | H.F. | Surveyor | Perth | 1876 | WA Almanack |
| Johnston | J. | Forster Farmerand Grazier | Wellington District (Bunbury Etc.) | 1879 | WA Almanack |
| Johnston | J. | Farmer | Victoria District (Greenough) | 1881 | WA Almanack |
| Johnston | J. | Farmer | Victoria Districts (Greenough) | 1882 | WA Almanack |
| Johnston | J. | Forster, Farmer & Grazier | Wellington District (Bunbury, Etc.) | 1882 | WA Almanack |
| Johnston | J. | Carpenter | Cossack | 1883 | Herald Almanack |
| Johnston | J. | Boatman | Fremantle | 1884 | Herald Almanack |
| Johnston | J. | Boatman | Fremantle | 1884 | Herald Almanack |
| Johnston | J. | Boatman | Fremantle | 1884 | Herald Almanack |
| Johnston | J. | Boatman | Fremantle | 1885 | Herald Almanack |
| Johnston | J. F. | Farmer | Irwin & Dongara | 1873 | Herald Almanack |
| Johnston | J. F. | Farmer | Irwin & Dongara | 1874 | Herald Almanack |
| Johnston | J. F. | Farmer | Irwin & Dongara | 1875 | Herald Almanack |
| Johnston | J. F. | Farmer | Irwin & Donarra | 1876 | Herald Almanack |
| Johnston | J. F. | Farmer & Grazier | Bunbury & Suburbs | 1880 | Herald Almanack |
| Johnston | J. F. | Farmer & Grazier | Bunbury | 1882 | Herald Almanack |
| Johnston | J. F. | Farmer & Grazier | Wellington District (Bunbury, Etc.) | 1884 | WA Almanack |
| Johnston | J. F. | Farmer | Bunbury | 1885 | Herald Almanack |
| Johnston | J. F. | Farmerand Grazier | Wellington District | 1886 | WA Almanack |
| Johnston | J. F. | Farmer and Grazier | Bunbury | 1887 | WA Almanack |
| Johnston | J. F. | Farmer and Grazier | Bunbury | 1888 | WA Almanack |
| Johnston | J. F. | Farmer & Grazier | Bunbury, Etc. | 1889 | WA Almanack |
| Johnston | J. F. | Miller | Bunbury | 1897 | Witton's Directory |
| Johnston | J. Forster | Farmer & Grazier | Bunbury | 1877 | WA Almanack |
| Johnston | J. Forster. | Farmer & Grazier | Wellington District (Bunbury, Etc.) | 1881 | WA Almanack |
| Johnston | J. Foster | Farmer & Grazier | Bunbury | 1877 | Herald Almanack |
| Johnston | J. Foster | Farmer & Grazier | Bunbury | 1878 | Herald Almanack |
| Johnston | J. R. | Auctioneer & Horse Bazaar | Hunt Street, Coolgardie | 1897 | Witton's Directory |
| Johnston | J. S. | Wheelwright | York | 1869 | WA Almanack |
| Johnston | J. S. | Wheelwright | York | 1870 | WA Almanack |
| Johnston | J. S. | Wheelwright | York | 1872 | WA Almanack |
| Johnston | J. S. | Wheelwright | York | 1873 | WA Almanack |
| Johnston | J. S. | Wheelwright | York | 1874 | Herald Almanack |
