There have been six accruals. The first accrual consists of manuscripts, correspondence, and Weed/Flower Press materials. The second accrual (17-1997) consists of manuscripts, correspondence, Weed/Flower Press materials, juvenilia and oversize. The third accrual (13-2000) consists of manuscripts, correspondence, photographs, and printed materials. The fourth accrual (13-2005) has been arranged in the following series: manuscripts, typescripts and proofs; correspondence; manuscripts by others; personal documents and other materials (includes photographs); posters. The fifth accrual (05-2011) consists of Ball’s business archives as an antiquarian bookseller of Canadian literature: William Nelson Books (1972-1985); Nelson Ball, Bookseller (1985-2010). The sixth accrual (2016-029) consists of manuscripts, typescripts and proofs for books of poetry and some prose.