Abstract This collection consists of materials derived from Bill Michaelis' role as an educator, consultant, and author of play and recreational studies. The materials are dated from 1950 to 2019, with the bulk of the materials between 1974 and 1995. The papers are comprised of newspaper clippings, reference materials, conference, workshop, and course documents, and includes papers documenting the history of the New Games Foundation such as administrative documents, marketing materials, photographs,...