Topics include his early experiences; study of geophysics at the University of Toronto (1943-1947, M.A. 1948); influence of Arthur Brant, Lachlan Gilchrist, Burton, John Satterly, J. Tuzo Wilson, and Watson. Employment by Dominion Observatory. Doctorate in geophysics at University of St. Louis (1949-1951). Work on magnetic field and gravitational field mapping. Lecturer at Toronto (1949-1952) and Geophysicist at Dominion Observatory (1952-1954). Study of the relation of gravitational and magnetic anomalies in Geophysics; gravimetry. Cratering disputes in geophysics and the work of Carl Beals, Harrision, and Hodgson. Professor at Alberta (1954-1960) and Toronto (1963-199?). Use of seismic studies to measure explosions. Roles of funding agencies. Tenure as Secretary-General of the International Union of Geodesy and Geophysics.