National Geographic : 1937 Oct
Photograph by J.Baylor Roberts TINY LIGHTS FLASHING, BUSY FINGERS FLYING, CORDS CLICKING, VOICES MURMURING-THAT'S ASWITCHBOARD AT WORK Each girl has before her rows of tiny holes, or "jacks," each one the terminal of a telephone line. By insertingthe ends ofapair ofswitchboard cords inany two holes she connects two lines, making conversation possible. This Washington, D. C., "horseshoe" exchange has positions for 95girls. The chief operator sitsata desk to the left. The girl in the high chair is a supervisor, several of whom are on duty in rush periods, each incharge of 10or12girls.