The Charles Butt Ballard Negative Collection.
Launching of "Isabelle J. II" at Bass Harbor Boat Shop. Owner: Bill Tower, Ogunquit, Maine. March 5, 1950
W.H. Ballard, “Launching of Isabelle J II,” Mount Desert Island Historical Society, accessed April 27, 2025, https://mdihs.digitalarchive.us/items/show/5771.Item 6137
