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Pere Marquette Class SP-3 Pacific #720 at the coaling tower at Detroit's 15th Street Yard in October,1939.The PM's Pacifics were the backbone of its passenger-hauling fleet right up until the C&O merger in 1947. The dozen SP-3s were the PM's largest class of Pacifics. Number 720 was built by Alco in June, 1921 and served the PM and later the C&O until it was retired in December, 1949.
Fritz Milhaupt Collection
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