Ontario Vintage Diesels. The Ontario Southland Railway based out of Salford Ontario serves a variety of industries in Ingersoll, Tillsonburg and St Thomas, and in the small agricultural communities in between. I recently had the chance to spend a day chasing, and got the recently repainted Ex-CN, Ex-VIA, General Motors FP9A Locomotive 6508, built in November 1954 and still working hard. The second unit is an Ex-CPR General Motors GP9, built in May 1957. The train is westbound from Ingersoll with five tank cars bound for industries in St Thomas.