Cyclopedia of applied electricity : a practical guide for electricians, mechanics, engineers, students, telegraph and telephone operators, and all others interested in electricity
A multi-volume technical reference issued in 1905 by the American School of Correspondence in Chicago for electricians, mechanics, engineers, and telegraph and telephone operators studying by mail. Its plates mix line-drawn wiring diagrams, switchboard and transformer schematics labeled in small caps, and halftone photographs of fittings and machine parts, offering diagram grammar, technical lettering, and mechanical silhouettes.
