This primary source comes from the Collection HST-AVC: Audiovisual Collection.
National Archives Identifier:
199716Full Citation: Photograph 73-2562; Truman speaking at the Lincoln Memorial; 6/29/1947; Photographs Relating to the Administration, Family, and Personal Life of Harry S. Truman, 1957 - 2004; Collection HST-AVC: Audiovisual Collection; Harry S. Truman Library, Independence, MO. [Online Version, https://docsteach.org/documents/document/1-truman-lincoln-memorial, October 13, 2024]