Inside Out Library · ExploreModern locomotive engineering, with questions and answers .. (1913)Swingle, Calvin Franklin, 1846- [from old catalog] · Chicago, F. J. Drake & co · leaf 798WALSCHAERT VALVE GEAR 769 … 770 LOCOMOTIVE ENGINEERINGLocomotivesInternet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.More pictures from Modern locomotive engineering, with questions and answers ..More like this