Lemieux studied at the École des beaux-arts de Montréal from 1926 to 1929 and demonstrated a talent for illustration. Upon graduating he spent a year in Paris, where he studied at the Académie de la Grande Chaumière and Académie Colarossi. He returned to the École des beaux-arts in Montreal from 1931 to 1935 to obtain a teaching diploma, then taught at the École des beaux-arts in Quebec City, his birthplace, from 1937 to 1967. Lemieux has been represented in numerous exhibitions in Canada and abroad. A monograph on his life and work by Guy Robert was published in 1968, and he was named a Companion of the Order of Canada that same year. In 1969 the Montreal Museum of Fine Arts organized the first retrospective of his work. Lemieux illustrated several books, including Gabrielle Roy’s La Petite Poule d’eau (Where Nests the Water Hen) in 1971 and Louis Hémon’s Maria Chapdelaine in 1981. In 1990 the Musée du Québec (now the Musée national des beaux-arts du Québec) organized a major retrospective of Lemieux’s work, but the painter died at the age of eighty-six shortly before its opening.