(1912-96) Treasurer of the Society (1970-76) and Chair of the Property Committee (1972-77).

(1907-76) Director of the David Dunlap Observatory (1951-65), RASC President (1953-54).

(1865-1956) Professor of Astronomy at University of Toronto, President of the Society (1904-07), editor of the Journal and Handbook for 50 years, and an important figure in the creation of the David Dunlap Observatory.

(1857-1940) F.R.S.C., F.R.A.S.C. Director of the Toronto Observatory and Superintendent of the Dominion Meteorological Service (1894-1929), and President of the Society (1902-03). He was knighted in 1916.

(1842-1905) B.A., M.A., M.B. A school inspector by trade. He built the 12½" reflector (the largest in Canada at the time) that he used to observe the heavens from his observatory on Talbot Street in Simcoe, Ontario.

(1847-1903) Corresponding Secretary (1890-99) and President of the Society (1900-01).

(1834-1905) F.R.S.C., F.R.A.S.C. President of the society (1898-99); Honorary President and Director, La Institutio Solar Internacional (Monte Video, Uruguay).

(1820-1905) D.C.L., Q.C. Served as Vice President of the Society (1892-94), and President (1895).

(1893–1962) Toronto Centre member; a prominent observer of his day; first Chant Medal recipient.

(1846-1930) Math teacher at Upper Canada College, later a lawyer; Society President (1896-97).