Universal Negro Improvement Association: Handwritten notes by Dr. Tuttle, Box: 10, Folder: 73. William Tuttle's research and teaching in African American history and the history of racial violence in 20th century America, RH MS 1472. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/389100 Accessed November 27, 2024.