Original electrical trade vintage catalog for CANNON ELECTRIC DEVELOPMENT COMPANY.  Main office and factory was located at 3209 Humboldt Street, Los Angles, CA. Manufacturers of Multi-contact connectors, D-C solenoids and signal equipment. Type AN army, navy aeronautical specifications connectors for aircraft, instruments, and radio, type K and RK, types M P, O, X, XK and many more are shown. Disbound from a large 1948 architect construction materials book, this unique old four page technical specifications brochure would display wonderfully matted and framed. A marvelous addition to your retro electrical equipment library. Pages are loose and contains a small amount of residual glue on edge.