CPR Selkirk

The CPR Selkirk class was built to haul freight and passenger trains through the challenging terrain between Calgary and Revelstoke. Though across the border in the US much larger locomotives were in common use, they were the largest locomotives built in the British Empire. Twenty were built in 1929, a further ten in 1938, and six in 1949. They worked till the dieselization of the CPR in 1959.