Fonds concerns Forsey's activities as a student, and later as a teacher at McGill. Included are his fourth-year essay on Chaucer's Summoner's Tale, and his valedictory address (1925). His teaching career at McGill is documented by a file of correspondence, memoranda, and examination papers relating to one of Forsey's students in 1939, and files of correspondence concerning Forsey's reappointment in 1940 in the light of accusations, from various quarters, of Communist sympathies. Two letters from Forsey (1973, 1980) illustrate his later perspective on these events.