IBM SSEC Vacuum tube and Relay
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
Item Details
- Type
- Still Image
- Catalogue number
- 102698439
- Category
- Photograph