L.F. Loree, Delaware and Hudson #1403

The L. F. Loree was an experimental high pressure triple expansion steam locomotive, sporting 4 cylinders and poppet valves instead of the more common slide valves. The locomotive was built in 1932 and placed in service in April 1933. Despite all its unusual features, it was not particularly successful, being a slow speed freight engine when the trend was for large heavy engines capable of higher speeds. More here.