Merrill, Robert H., 1881-1955, “Jewell Blue Cottage, Portage Lake,” Digital Collections, accessed December 5, 2025, https://digitalcollections.library.gvsu.edu/document/50236.
Black and white photograph of a cottage built into the side of a hill in the woods. "Jewell Blue Cottage - Portage Lake" is written on the bottom of the image.