Canadian National No. 91 is an E-10-a class 2-6-0 "Mogul" type steam locomotive that works on the Middletown & Hummelstown Railroad. 91 was originally built by the Canadian Locomotive Company in Kingston, Ontario, for the Grand Trunk Railway as number 1013 in the year 1910. In 1919, it was renumbered 915.
Today the engine is stored at the Middletown & Hummelstown RR in Middletown, PA.