New York: Norman W. Henley Publishing, 1920. Third edition, revised and enlarged. Hardcover. Item #29895
Lengthy subtitle reads, "A practical treatise on the locomotive valve actuating mechanism invented by Egide Walschaert , with the history of its development and its evolution into the mechanically correct locomotive valve gear of the present day. In five general divisions, embracing: Analysis of the Walschaert Valve Motion; Designing and Erecting the Gear; Proofs of the Superiority of the Walschaert Gear in Locomotive Service; Catechale Questions and Answers for Instuction and Examination. Modern Radial Valve Gears Other than the Walschaert, with Full Explanations, and Questions and Answers Relative to Breakdowns and their Repair of Such Gears, while on the Road." 245 pages with illustrations and foldouts, plus card stock measuring template for figures 35 and 36 laid in, plus 40 pages of ads in the rear. Bound in original green cloth with lettering in black. Endpapers mildly toned. Small ding to lower edge of the rear cover. Near fine in the oringinal plain brown dust jacket.