setting a standard different from the rest of the railroad community. Such is the case with its T1 class 4-4-4-4 duplex locomotives. In spring 1942, prototypes Nos. 6110 and 6111 were quietly ...

The PRR manufactured 83 locomotives between 1937 and 1946, ranging from powerful Q2 4-4-6-4s to incredibly fast T1 4-4-4-4s, none of which lasted even ten years in regular service. A footnote ...