Objects by: United States Navy
General Electric Company
1945-1960
G. Felsenthal & Sons
ca. 1940-1955
National Electrical Machine Shops, Inc.
circa 1942
Wollensak Optical Company
circa 1943
Harvard Computation Laboratory
1944-1952
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