Manual Control Testing
Title
Manual Control Testing
Description
"H. C. Przybysz, R. K. Voss, and T. E. Jackson (front to back) use the Central Control Manual Tester to test the No. 1 ESS installed for the C. & P. Telephone Co. at Chase, Maryland. The large book in the foreground contains program listings which are used to interpret the displays on the Tester lamp panels." From Bell Laboratories Record, June 1965.
Publisher
Bell Laboratories Record
Date
June 1965
Rights
Bell Telephone
Laboratories, Incorporated
Laboratories, Incorporated
Collection
Citation
“Manual Control Testing,” Millersville University Digital Exhibits, accessed September 7, 2026, https://millersvillearchives.com/items/show/1531.