Merrill, Robert H., 1881-1955, “Michigan. Pile Allegan County ditch mammoth tooth,” Digital Collections, accessed April 4, 2025, https://digitalcollections.library.gvsu.edu/document/53355.
Black and white lantern slide of a man standing in a water-filled ditch in which a mammoth tooth was found in Allegan County, Michigan. Several men stand or crouch on higher ground nearby.