This primary source comes from the Collection FDR-PHOCO: Franklin D. Roosevelt Library Public Domain Photographs.
National Archives Identifier:
197161Full Citation: Public Works Administration Project, Bonneville Dam in Oregon, 'Excavation for Navigation Lock and Approach Channnel'; 12/21/1934; Collection FDR-PHOCO: Franklin D. Roosevelt Library Public Domain Photographs. [Online Version, https://www.docsteach.org/documents/document/public-works-administration-project-bonneville-dam-in-oregon-excavation-for-navigation-lock-and-approach-channnel, May 16, 2024]