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Picture of a Standard Telephone
24" x 18"
Photographic Print

Original caption: WESTERN ELECTRIC TOUCHTONE TELEPHONE. HERALDING A NEW ERA IN COMMUNICATIONS, THE DIAL IS REPLACED BY PUSHBUTTONS. AS EACH BUTTON IS PRESSED, TWO SIMULTANEOUS MUSICAL TONES ARE GENERATED AND TRANSMITTED TO A CENTRAL SWITCHING OFFICE, THEN TRANSLATED INTO A SERIES OF PULSES SIMILAR TO THOSE MADE BY THE STANDARD TELEPHONE DIAL. 1964 PHOTOGRAPH.