Dr Jack Rosen is a book collector with an interest in veterinary medicine history. He was a veterinary practitioner in Ontario and is now retired. He phoned the Veterinary Medicine Library at the U of S in 2006 with a collection he wished to donate (he had offered it to his alma mater in Ontario but they wanted only specific items and the donor wanted to keep the collection intact, thus it came to the U of S. Since the original gift he has sent two additional packages of materials. The collection consists of books, pamphlets, newspaper clippings relating to the profession of veterinary medicine in North America with a focus on the history of the Ontario Veterinary College in Guelph, ON. It is housed in the University Archives and Special Collections.