| description: | William Fielding Hanna, B. 1892, Middle Musquodoboit, Halifax County, Ns, D. 1972, Ba (Dalhousie), B Sc, M.Sc. (Alberta), Ph.D. (Manitoba). Veteran Of Both World Wars. Served In Rcaf In World War Ii When He Became Group Captain. Director Of Dominion Rust Rust Research Laboratory From 1945 - 1952. Went To Ottawa As Dominion Botanist, A Position He Occupied Until His Retirement In 1958 |