Jacob Yoder and George Wharen 272 pages hardcover
This is a look at Locomotive Valves and valve gears. Includes a look at the different types of valves, the Stephenson Valve gear, Walschaert Valve Gear, Baker Valve Gear, Southern Locomotive Valve Gear, Joy Valve Gear, Young Locomotive Valve, Gooch Stationary Link, Allen Valve Gear and Valve settings.
