This primary source comes from the Records of the War Department General and Special Staffs, 1860 - 1952.
Full Citation: Canning unit, Summit, New Jersey; 1917 - 1918; Food Administration - Education; American Unofficial Collection of World War I Photographs, 1917 - 1918; Records of the War Department General and Special Staffs, 1860 - 1952, Record Group 165; National Archives at College Park, College Park, MD. [Online Version, https://docsteach.org/documents/document/canning-unit-summit-new-jersey, April 29, 2024]