The proceedings contain the text of the major presentations to the interpretation seminar, held September 21-23, 1983 at Bark Lake, Irondale, Ontario, and attended by 66 participants. The proceedings contain the keynote address, which defined interpretation for the participants, and 11 other presentations dealing with planning and evaluating interpretation programs (including videotaped critiques and planning first hand experiences), interpretation in the natural setting (such as Wye Marsh), interpretation in the urban setting (such as Toronto), and interpretation in the historical setting (such as Black Creek Pioneer Village and Sainte Marie Among the Hurons and on past and present travel routes in southern Ontario). The proceedings list names and addresses of participants and workshop leaders. (SB)