Merrill, Robert H., 1881-1955, “New Orleans canal lock,” Digital Collections, accessed December 5, 2025, https://digitalcollections.library.gvsu.edu/document/50221.
Black and white photograph of a lock. A building is next to the lock, and a flagpole and flag are visible in the center of the image. Taken my Merrill while attending the American Society of Civil Engineers conference in New Orleans, Louisiana.