This primary source comes from the General Records of the Department of Justice.
Full Citation: Letter from Charles Douglas to Attorney General A.M. Palmer Regarding Lynching; 5/20/1919; 158260-88; 158260, 1904 - 1974; Straight Numerical Files, 1904 - 1974; General Records of the Department of Justice, Record Group 60; National Archives at College Park, College Park, MD. [Online Version, https://docsteach.org/documents/document/letter-attorney-general-am-palmer-regarding-lynching, May 7, 2024]