Merrill, Robert H., 1881-1955, “Lake Gravel Camp from northeast,” Digital Collections, accessed February 20, 2026, https://digitalcollections.library.gvsu.edu/document/49398.
Black and white photograph of camp at Gravel Lake [likely Lac des Gravier]. Taken by Robert Merrill from northeast. Four people can be seen standing in the background next to a log cabin.