Oklahoma City 17-C circuit patch bay March 1957 - (L-R) T. Brown, Paul Karaghivsian, Bob Dunn (supv), Bob Sims, Darrell Larty, J.R. Robinson

Note: The small flat panel hanging just to the left of the clock is actually a projector screen, used to display a variety of test meter details when you couldn't view the test meter readings directly around the corner from where you had to stand while making equipment adjustments.