During WWII, the Pennsylvania Railroad found itself in dire need of motive power. Due to War Production Board requirements, no new designs were allowed, so the Pennsy tested various engines and selected a 12-year-old C&O design - the T1 2-10-4, which was built by Lima. The new "Texas" type on the PRR was a near duplicate of the first super-large 2-10-4 of the C&O.