1917
1919

1918

AE Wall Phone Circa 1918
AE Wall Phone Circa 1918
Automatic Electric
Dunyach & Leclert phone
Dunyach & Leclert phone
Rural Toll Phone
Rural Toll Phone
Northern Electric/Telecom
Siemens & Halske Intercom Telephone
Siemens & Halske Intercom Telephone
Siemens
Systeme Wich-Deckert desk telephone
Systeme Wich-Deckert desk telephone
PDF: AT&T Annual Report, 1918
AT&T Annual Report, 1918
Ad: Kellogg No. 97 ad
Kellogg No. 97 ad
PDF: Kellogg 1918 Intercoms Catalog
Kellogg 1918 Intercoms Catalog
Ad: Stromberg-Carlson ad
Stromberg-Carlson ad