Electrical engineer's pocket-book: a hand-book of useful data for electricians and electrical engineers
A reference pocket-book of tables, formulas and wiring data compiled by Horatio A. Foster for practicing electricians and electrical engineers, published by D. Van Nostrand in New York and Spon in London in 1901. The plates are line-drawn circuit and switchboard diagrams — coils, relays, lamp banks, dynamos, common-return lines — offering flat schematic linework, repeating symbol motifs and grid-like layouts.
