Original 1948 electrical trade vintage catalog for the LAKE MANUFACTURING COMPANY. Main office and plant was located at 2323 Chestnut Street, Oakland, CA.

Manufacturers of Voycall Intercommunicating Systems. Intercom.

Voycall Intercommunicating equipment is so designed that it will fulfill any requirements desired from a simple home installation to a large factory system connecting all departments and employing public address. A combination of all or any units may be installed. Voycall is also built in specially designed units for apartment houses, schools and hospitals. 

Has product images,  description, application and specifications to provide product details.

Unbound from a large rare 1947-1948 Catalog File, this unique old one-page technical brochure would display beautifully matted and framed. Nice graphics. A fabulous addition to your retro construction industry library.