Verso Bell Labs label text: "Subject: COMPUTERS General - TRADIC. Number: B654/0-33A. Source: Release, March 14, 1955. Date taken: 1955. Background Information: The laboratory model of TRADIC, Bell Telephone Laboratories' new electronic "brain," can provide answers to trigonometric problems with a series of "dots" on an oscilloscope. The dots of light move so rapidly that they actually appear to draw geometric diagrams on the scope. J.H. Felker, project engineer, operates the oscilloscope. Persons shown: J.H. Felker. Original (B/W box checked). Negative (120 box checked)." Verso numbers: #1211, 25.4-11 (crossed out), 6.1.4-3 (crossed out), B-654-33. Verso black stamp "Anthony Linck, Briarcliff Manor, New York."