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U.S. Army Signal Corps type BC 8-A radio receiver

Marked: "Signal Corps U.S. Army / Set box Type BC-8-A / Radio-Audio Frequency Amplifier / 1000 Meters D.W. Serial No. 115 / Order No. 130984 Date: June 1920 / Made by Wireless Improvement Co. / New ...
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U.S. Army Signal Corps model BC-14A radio receiver

Marked: "Signal Corps, U.S. Army / Radio Receiving Set Box / Type BC-14A Order No. 42730 / Date: June 21, 1918 / Made by / General Radio Co. / Cambridge, Mass". A World War I crystal receiver for ...