The Lehigh Valley's class P-2 Mikados were built in 1912 by Baldwin Locomotive Works. With 56-inch drivers, they mustered 180 p.s.i. of boiler pressure; cylinder dimensions were 27x30 inches. They produced 59,752 pounds of tractive force and weighed 322,000 pounds minus tender. Their evaporative heating surface totaled 4877 square feet and their superheater surface 1100 square feet. The very large Wooten firebox with its 100 square feet of grate area was designed to burn the anthracite mined in the LV's eastern Pennsylvania territory. The railroad scrapped almost half of this class of 42 engines before World War II, with the remainder lasting until 1949-1951. There is no information about date, location, or photographer for this photo of No. 319 acquired via eBay.