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Harry Lambert Welsh, physicist, educator (b at Aurora, Ont 23 Mar 1910; d at Toronto 23 July 1984). He was educated and spent his career at U of T, except for 1931-33 in Göttingen and 1943-45 in Ottawa as lieutenant-commander of naval operational research.

Frank Fairchild Wesbrook, physician, educator (b in Brant County, Ont 12 July 1868; d at Vancouver 20 Oct 1918). Having obtained his arts and medical degrees at U of Man 1890, he did postgraduate work in London, Dublin and Marburg, Germany.

Charles Gibb, horticulturist (b at Montréal 29 July 1845; d at Cairo, Egypt 8 Mar 1890). Poor health led Gibb to seek an outdoor occupation and in 1872 he established extensive orchards at Abbotsford, Qué, to study fruit culture and arboriculture, and to test plant material from abroad.

Donald James Le Roy, physical chemist, science adviser (b at Detroit, Mich 5 Mar 1913; d at Ottawa 1 Nov 1985). After gaining his PhD at the University of Toronto (1939), he joined E.W.R.

Stephen Lett, psychiatrist (b at Callan, Ire 4 Apr 1847; d at Kingston, Ont Oct 1905). Having served as assistant medical superintendent of the insane asylums in Malden and London, Ont, 1870-77, he lost out to R.M. BUCKE for the post of London's medical superintendent.

James Loudon, educator, physicist (b at Toronto 24 May 1841; d there 29 Dec 1916). President of the University of Toronto from 1892 to 1906, Loudon devoted his life to the university.

David Arnold Keys, physicist (b at Toronto 4 Nov 1890; d at Ottawa 28 Oct 1977). He was a much-loved professor at McGill 1922-47 and thereafter the "mayor of Chalk River" - administrative manager of the Canadian atomic project. After research on antisubmarine warfare with J.C.

Keith James Laidler, chemist, professor (b at Liverpool, Eng 3 Jan 1916). After studying at Oxford and Princeton and holding appointments at the National Research Council and Catholic U, Washington, DC, he joined U of Ottawa in 1955.

Huguette Labelle, née Rochon, nursing teacher and administrator (b at Rockland, Ont 15 Apr 1939). She began her career as a general staff nurse at the Ottawa General Hospital. After changing to teaching, she became founding director of the Vanier School of Nursing in Ottawa.

Joseph-Clovis-Kemner Laflamme, priest, educator, scientist (b at St-Anselme, Canada E 18 Sept 1849; d at Québec C 6 July 1910). After studying at the SÉMINAIRE DE QUÉBEC and later spending periods at Harvard and in Europe, Laflamme became professor of geology and mineralogy at Laval in 1870.

John Larkin Kerwin, physicist, research director (born 22 June 1924 in Québec City, Québec; died 1 May 2004 in Québec City). Kerwin joined Laval's physics department in 1946 after study at St Francis Xavier, U of T and Massachusetts Inst of Technology and, after earning his DSc at Laval, rose to become its rector in 1972.

Thorfinn Karlsefni (Old Norse Þórfinnr Karlsefni), explorer and trader (born c. 980–95 CE in Iceland; year of death unknown). Born Thorfinn Thordarson, this Icelandic aristocrat and wealthy merchant ship owner led one of the Norse expeditions to Vinland, located in what is now Atlantic Canada. He is usually referred to by his nickname, Karlsefni, meaning “the makings of a man.” Karlsefni appears in several historical sources. A long passage in The Saga of the Greenlanders is devoted to him, and he is the chief subject of The Saga of Erik the Red. There are also short accounts in the Old Norse manuscripts known as the Arni Magnusson codex 770b and Vellum codex No. 192.

Walter Andrew Kenyon, archaeologist, museum curator (b near Brantford, Ont 21 Feb 1917; d at Toronto 10 Sept 1986). He joined the Royal Ontario Museum in 1956 as assistant curator of ethnology, later earning Canada's first PhD degree in archaeology (U of T, 1967).

George Templeman Kingston, meteorologist, (b at Oporto, Portugal 5 Oct 1816; d at Toronto 21 Jan 1886). For successfully promoting and organizing one of Canada's first scientific services, Kingston has been called the father of Canadian METEOROLOGY.

Hamilton Hartley Killaly, engineer, civil servant (b at Dublin, Ire 1800; d at Picton, Ont 28 Mar 1874). Killaly attended Trinity College, Dublin, and worked as an engineer on canal projects before immigrating to Upper Canada in 1835.

George Craig Laurence, nuclear physicist (b at Charlottetown 21 Jan 1905; d at Deep River, Ont 6 Nov 1987). Educated at Dalhousie and Cambridge (under Ernest RUTHERFORD), Laurence became the NATIONAL RESEARCH COUNCIL's radium and X-ray physicist in 1930, when J.A.

William (Bill) Henry Gauvin, CC, FRSC, engineer, educator, science policy planner (born 30 March 1913 in Paris, France; died 6 June 1994 in Beaconsfield, California).

Victor John Harding, professor of pathological chemistry (b in Eng 23 Oct 1885; d at Toronto 3 July 1934). Graduating in chemistry from Owen's College, Manchester (DSc, 1912), Harding began an association with McGill in 1910. He became associate professor of physiological chemistry in 1917.

Wilfrid Bennett Lewis, physicist, chief scientist for 26 years of Chalk River Nuclear Laboratories (b at London, Eng 24 June 1908; d at Deep River, Ont 19 Jan 1987). Lewis trained under Lord RUTHERFORD and worked in atomic physics throughout the 1930s.

William Frederick King, astronomer (b at Stowmarket, Eng 19 Feb 1854; d at Ottawa 23 Apr 1916). King worked as a Dominion land surveyor and topographical surveyor in western Canada. With É.G. DEVILLE and O.J.