Audio Signal Devices

Object Details

Collection Citation: George H. Clark Radioana Collection, Archives Center, National Museum of American History, Smithsonian Institution

Collection Rights: Collection items available for reproduction, but the Archives Center makes no guarantees concerning copyright restrictions. Other intellectual property rights may apply. Archives Center cost-recovery and use fees may apply when requesting reproductions.

Scope and Contents note: Series 49 contains advertisements; articles; a bid invoice; blueprints; booklets; bulletins, specifications; correspondence, l905-l920 & l942; diagrams; instruction booklets; illustrations; news clippings; notes; patent copies; periodical clippings; photographs; service notes; a General Electric Radio Apparatus Catalog for audio-signal-indicating devices; C. Brandes, Inc. Radio advertising. Audio signal devices include: head telephones; telephone cords; telephone headband; telephone transformer; audibility meter; shunt box; group tuners where used in receiver circuit, and telephone condensers. (Box #221 is oversize).

Collection Restrictions: Collection is open for research but a portion of the collection remains unprocessed and is stored off-site and special arrangements must be made to work with it. Contact the Archives Center for information at archivescenter@si.edu or 202-633-3270. Gloves must be worn when handling unprotected photographs, negatives, and slides.