The fonds consists of correspondence, lecture notes, reference clippings, student notebooks, programs, newsletters, certificates, musical scores, receipts, pamphlets, and books produced and received by Wilfrid Sadler during his student days at Macdonald College and his professional activities as a professor in the Department of Dairying from 1918. The Department of Dairying was part of the Faculty of Agriculture from 1916 to 1955.