 Douglass was delegate to the Massachusetts constitutional convention in 1917 and 1918; author and playwright; delegate to the Democratic National Conventions in 1928 and 1932.Douglass was elected as a Democrat to the Sixty-ninth and to the four succeeding Congresses (March 4, 1925 – January 3, 1935); chairman, House Committee on Education (Seventy-second and Seventy-third Congresses).Douglass was an unsuccessful candidate for renomination in 1934.