The Mystery Radio!--Dr. Riggs granted 40 patents on revolutionary set based on entirely new principles. New York: Left, Donald F. Hastings, assistant to Dr. Riggs, discussing the amplifier with the inventor. This amplifier is but 5 inches wide by 3 inc...
Collection is open for research but is stored off-site and special arrangements must be made to work with it. The original glass plate is available for inspection if necessary in the Archives Center. A limited number of fragile glass negatives and positives in the collection can be viewed directly in the Archives Center by prior appointment. Contact the Archives Center for information at archivescenter@si.edu or 202-633-3270.
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.