A.G. Bell Wall Phone

Wall Telephone marked "A. G. Bell," 1876. Manufacturer: "Charles Williams Jr., Boston", made for "The National Bell Telephone Co." Two-part walnut case, upper part with microphone, detachable receiver, double bell, complete with all wires and 2 keys. Bell had his laboratory in the same building as Williams; the first Bell telephones were made there under close cooperation between Bell and Williams.