Inside Out Library · ExploreModern locomotive engineering, with questions and answers .. (1913)Swingle, Calvin Franklin, 1846- [from old catalog] · Chicago, F. J. Drake & co · leaf 799770 LOCOMOTIVE ENGINEERING … WALSCHAERT VALVE GEAR 771LocomotivesInternet 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