Fonds consists of manuscripts and proofs of Budge Wilson's books and short stories; correspondence with publishers, students, and teachers; publicity material; photocopies and clippings of reviews, profiles, and notices regarding awards and appearances; diaries; recorded radio interviews; and an assortment of other documents created and collected by the author throughout her writing career. The fonds also contains materials relating to the adaptation of Wilson's novel "Before Green Gables" into a Japanese animated television series.

Series contains materials created by Budge Wilson that not directly related to her career as an author. Files include Budge Wilson's diaries and calendars and materials relating to her job as a fitness instructor and photographer.