This primary source comes from the Records of the War Department General and Special Staffs, 1860 - 1952.
National Archives Identifier:
533665Full Citation: Photograph 165-WW-233A(4); Foreign Legion, 4th Liberty Loan Drive, New Orleans, Louisiana.; 10/2/1918; 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://www.docsteach.org/documents/document/foreign-legion-4th-liberty-loan-drive-new-orleans-la, April 23, 2024]