The Pitirim A. Sorokin Collection came to the University of Saskatchewan in 1968. The collection contains Sorokin's entire library of more than 1,500 books, and numerous other materials, including his own books, translations of these in some 50 languages, and books and articles by such other eminent scholars as Arnold Toynbee with Sorokin's comments in the margins. Other contents include: original Sorokin authored manuscripts; books and articles including first drafts and final revisions; some 90 notebooks on his reading and thinking; books and articles about him and his theories; his personal correspondence; photographs and other memorabilia. Among other materials there is a unique archive of Harvard Research Center in Creative Altruism founded by Sorokin. Correspondence regarding the provenance of this collection is available online here. A complete finding aid to the collection is available in pdf.