This fonds reflects W. Sterry-Cooper's work as an author and researcher, particularly with respect to his study of Edward Winslow and the Mayflower Pilgrims. It also documents his activities in connection with the planning, holding or commissioning of commemorative plaques, church services, and other public events to honour Edward Winslow and the Pilgrims of 1620.

It includes incoming and outgoing correspondence; research notes; drafts of essays, articles, book chapters, and sermons; and transcripts of 17th century documents and printed material. The fonds also contains a number of printed pamphlets and leaflets relating to Winslow history and Winslow memorials; hand-drawn maps of Colonial America, probably by Sterry-Cooper; professional drawings of memorial plaques honouring Edward Winslow; and photographs, including those of the Winslow farmhouse (Kempsey) and of Edward Winslow's portrait.