Spreading asbestos mixture on boiler of a locomotive at the C & NW RR 40th Street locomotive shops (LOC) Bild von The Library of Congress Delano, Jack,, photographer. Spreading asbestos mixture on boiler of a locomotive at the C & NW RR 40th Street locomotive shops 1942 Dec. 1 transparency : color. Notes: Identification of 40th Street shops confirmed by the source: Flickr Commons project,...