A double image, card, Devil's Oven, with many with hat shown inside the entryway of cave in the rocks, probably on the Hadley Point side of Frenchman's Bay, Bar Harbor, photographed by Allen, 6 Temple Place, Boston, R.H. Hysom handwritten on the back of the card
Allen, the Photographer, “Devil's Oven, Mount Desert Scenery,” Mount Desert Island Historical Society, accessed November 14, 2024, https://mdihs.digitalarchive.us/items/show/4982.Item 5348