Electronic Timers Employing Thyratrons 2D21 or 2050, AN-131, March 1, 1948.
RCA, Radio Corporation of America, Tube Department, Harrison NJ, 1948; 4-page bifold 8.5x11, diagrams.
RCA, Radio Corporation of America, Tube Department, Harrison NJ, 1948; 4-page bifold 8.5x11, diagrams.