This primary source comes from the Collection HST-OFF: Official Files (Truman Administration).
Full Citation: Flyer Regarding a Funeral March in Washington, D.C.; 8/3/1946; Lynching, OF 93a; Official Files, 1945 - 1953; Collection HST-OFF: Official Files (Truman Administration); Harry S. Truman Library, Independence, MO. [Online Version, https://www.docsteach.org/documents/document/flyer-funeral-march-washington-dc, April 29, 2024]