Inside Out LibraryInventors at work, with chapters on discovery (1906)Iles, George, 1852-1942 · New York, Doubleday, Page & company · leaf 6328 FORM-BRIDGES … BRIDGES 29Inventions · InventorsInternet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.More pictures from Inventors at work, with chapters on discoveryMore like this