According to Gerard Bernet's book First Generation Geeps, this locomotive has had quite a history. It started out life as Delaware, Lackwanna & Western #957. In 1960 with the Erie merger it became EL #1278. With the Conrail merger it initially became #5993. In the 1970s, Conrail upgraded a number of ex-EL geeps to GP-8s. This was one of them and that's when it got the number 5460.