The file appears to be a compressed archive, and the "paper" associated with it refers to the John M. Olin Papers, 1872-1924 (Part 1) .
: John M. Olin Papers, 1872-1924. Part 1: Original collection, 1879-1916 Threeseventy.part1.rar
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: Letter books, legal correspondence, and personal records. 1872-1924. Part 1: Original collection
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