The class D15 (class T, pre 1895) of the Pennsylvania Railroad comprised a solitary -system cross compoundsteam locomotive of 4-4-0 "American" wheel arrangement in the Whyte notation. The sole locomotive was #1515, built in 1892 at the PRR's Altoona Shops, it had very British lines with a full-length footplate, splashers, a six-wheel tender, and large 84 in (2,134 mm) drivers.[3] It was built in 1892 by the PRR’s Altoona Works it remained in service until it was retired in 1945 and put in storage at the PRR’s Altoona Works and was scrapped in 1951 .
^Staufer, Alvin F. & Pennypacker, Bert (1962). Pennsy Power: Steam And Electric Locomotives of the Pennsylvania Railroad 1900–1957. Staufer. LCCN62020878.