Leo F. Pettipas No description specified. 1-4 (4 Records) Documents Early Man In Manitoba (1970) Introducing Manitoba Prehistory (1983) Paleoindian Prehistory of the Glacial Lake Agassiz Region In Southern Manitoba, 11,500 To 6500 B.P (1983) Reconsideration of Late Paleoindian (Plano) Prehistory (1982)