Great Train Wreck of 1856
The Great Train Wreck of 1856 occurred in Whitemarsh Township, Pennsylvania, between Camp Hill station (known as Sandy Run, Camp Hill, Sellwick and finally Fellwick station before being closed in 1996) and Fort Washington station, on July 17, 1856. Two trains, traveling on the same track in converging directions, collided, killing between 59 and 67, and injuring over 100.
Source: Wikipedia — Great Train Wreck of 1856 (CC BY-SA 4.0)