Abstract The Gordon Burghardt papers include extensive research files relating to play behavior in animals, Burghardt's writings, including his 2005 book, The Genesis of Animal Play, and conferences attended by Burghardt. The collection includes articles, correspondence, conference materials, drafts, and notes. The materials consist of printed materials, photocopies, photographs, CDs, and floppy disks. The materials date from 1709 to 2023 with the bulk dating from...