John Grierson was a pioneering Scottish documentary maker, often considered the father of British and Canadian documentary film. In 1926, Grierson coined the term "documentary" in a review of Robert J. Flaherty's Moana.
John Grierson (right) with Bolivian filmmaker Jorge Ruiz in 1955
John Grierson (left), Chairman of the Wartime Information Board, meeting with Ralph Foster, Head of Graphics, National Film Board of Canada, to examine a series of posters produced by the National Film Board of Canada