Lt-Col Edward Frank Harrison C.M.G. (1869–1918) was an English chemical scientist, credited with the invention of the first serviceable gas mask during the First World War.Born in Camberwell, Harrison, at the age of 14, was apprenticed to a pharmacist, at the end of which he was awarded the Royal Pharmaceutical Society's Jacob Bell Scholarship. As a student, he was awarded medals in chemistry, botany and materia medica. He qualified as a pharmaceutical chemist in 1891, becoming a demonstrator in the Society's laboratory and school. He later became head of the analytical laboratory at Burroughs Wellcome, and assisted in the compilation of the British Pharmaceutical Codex.