Title
IBM SSEC Vacuum tube and RelayCatalog Number
102698439Type
Still imageDescription
B&W image of a vacuum tube and relay used in IBM SSEC. Vacuum tube has 7-43 188-5 on base.Verso: Berenice Abbott Photograph 50 Commerce AStreet New York 14, N.Y. red stamp.
Top Figure 6a in pencil
Dimensions
overall: 8 in x 10 inCategory
PhotographLot Number
X3853.2007