Bell Telephone Exhibition Drawings, 1957. Materials consist of schematic drawings of electrical circuits for an exhibit on the telephone by Bell Telephone Laboratories, and prints of exhibit panels.

Bell Telephone Exhibition - Long distance office xhibit panel, 1957. [Image no. SIA2019-004220]

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Bell Telephone Exhibition - Long distance office xhibit panel, 1957. [Image no. SIA2019-004220]
Bell Telephone Exhibition - Transistor xhibit panel, 1957. [Image no. SIA2019-004221]
Bell Telephone Exhibition - "Voices Under the Sea" exhibit panel, 1957. [Image no. SIA2019-004222]
Bell Telephone Exhibition - "Voices Under the Sea" exhibit panel, 1957. [Image no. SIA2019-004223]
Bell Telephone Exhibition - "Miniaturization through the use of printed circuitry" exhibit panel, 1957. [Image no. SIA2019-004224]
Bell Telephone Exhibition - Dialing exhibit panel, 1957. [Image no. SIA2019-004225]
Bell Telephone Exhibition - Crossbar switch exhibit panel, 1957. [Image no. SIA2019-004226]
Bell Telephone Exhibition - Solar battery exhibit panel, 1957. [Image no. SIA2019-004227]