Objects by: United States Navy
General Electric Company
1945-1960
General Electric Company
1930-1950
General Electric Company
1930-1950
General Electric Company
1945-1960
General Electric Company
1945-1960
General Electric Company
1945-1960
Psycho-Acoustic Laboratory, Harvard University
circa 1943
Harvey Radio Laboratories
circa 1945
Harvey Radio Laboratories
circa 1945