Steel Tube balancing on a rock. The rock is on a slat of wood and in the opening of a wooden door. The back of the photograph is marked: "The Stern Tube. 78%"
LaRue Spiker, “The Stern Tube,” Mount Desert Island Historical Society, accessed April 19, 2025, https://mdihs.digitalarchive.us/items/show/9827.Item 10193
