Louis R. Harlan, American historian and author (born 1922)

Louis Rudolph Harlan was an American academic historian who wrote a two-volume biography of the African-American educator and social leader Booker T. Washington and edited several volumes of Washington materials. He won the Bancroft Prize in 1973 and 1984, once for each volume, and the 1984 Pulitzer Prize for Biography or Autobiography for the second volume.