One of the more popular models that EMD created, the GP9 was manufactured between 1954 and 1959, with over 4000 units made. This unit was made in 1958, under B&O's flag, with the same number it has today.

GP10s are re-built model GP9s, being rebuilt by Illinois Central Gulf's Paducah Shops. Horsepower was increased, and the units were given low-noses. This unit was built in 1956 for the New York Central Lines, which made its way to Conrail before becoming #7529.

The Paducah shops are now operated by VMV Paducahbilt, and are still rebuilding engines today. This unit started as a Pennsylvania Railroad GP9 #7098.

This unit was built for the Nickel Plate Railroad as #701, lasting through Norfolk & Western and the Norfolk Southern. Originally assembled in 1960 with #8705, the manufacturer's serial numbers for these two are only 7 numbers apart.

This unit followed the same path as #8704, built for the Nickel Plate Railroad, then transferring to the Norfolk & Western, then to Norfolk Southern. Originally built in 1960.

Originally built for Great Northern Railroad as number 2016, it joined the forces under Burlington Northern. It served for a brief period of time with the Indiana Hi Rail before joining the GNRR.

GM's Locomotive division made GP20's between the years of 1959 and 1962. Built for Southern Pacific, #4125 originally had the number of 7207.

Brother to #9708 below, these two engines were also rebuilt at ICG's Paducah shops, and were then sold to RMGX (Railcar Limited).

Sister of #9706

The newest motive power to join the ranks, GP38-2s were made between 1972 and 1987, with about 1800 units made in total.