Career
Foster"s son Warren Dunham Foster was president of the Motion Picture Community Bureau. During World War I, the Bureau supplied the Y.M.C.A War Work Council and the Committee on Training Camp Activities with nine million feet of film a week used in the United States and two million feet of film a week used abroad. The films were watched by soldiers from the United States and its allies worldwide.
During World War I, Foster oversaw the development of a projecting machine that put pictures on the ceiling so that injured soldiers could watch films from their hospital cots.