Artifact Details Title Telegraph Transmitter Catalog Number B79.80 Type Physical object Date 1918 Manufacturer JJ & EF Johnson Company Place Manufactured U.S. Identifying Numbers Other number J-44 engraved on base Dimensions 1 1/2 x 5 1/2 x 3 in. Category Pre-computer/other Collection Title Gwen Bell artifact and book collection Series Title Pre-computing artifacts Credit Courtesy Gwen and Gordon Bell Lot Number B79.80