Original electrical trade vintage catalog for AUTOMATIC ELECTRIC INC. was located at 1033 West Van Buren Street, Chicago, IL. Manufacturers of Strowger P-A-X Telephone Automatic Dial Systems. Private Dial, Industrial Fire Alarm, Public Systems, Watchman's Supervisory Systems, Code Signaling, Miscellaneous Telephone and Signal Accessories. Shown are Type 1-A, Type 2 Monophones, and a 50 Capacity Line P-A-X Installation with the front cover removed. Disbound from a large 1931 architect construction materials book, this unique old three page technical specifications brochure would display wonderfully matted and framed. A marvelous addition to your retro electrical equipment library. Very light damp stain on bottom corner edge.