Röda Boken med en BC 300. Från byrådirektör Hise. Teleskolan.
Telefonkataloger från 1909. Public domain photograph - Sweden in 20th century, no copyright restrictions image - Picryl description
Kataloger. Göteborgsdelen 1938. Public domain photograph - Sweden in 20th century, no copyright restrictions image - Picryl description
I1832 Public domain photograph, Sweden, free to use, no copyright restrictions image - Picryl description
Telehytten Klot 1965. Public domain photograph - Sweden in 20th century, no copyright restrictions image - Picryl description
Telefonkatalog 5 juli 1967 Public domain historical portrait photograph, Scandinavian, free to use, no copyright restrictions image - Picryl description