Merrill, Robert H., 1881-1955, “Jonio Excavation,” Digital Collections, accessed March 31, 2025, https://digitalcollections.library.gvsu.edu/document/50384.
Black and white photograph of an excavation site at the Jonio Farm. Numbered markers are scattered among the excavated areas. A dog is visible sitting and a man can be seen working on the right side of the image.