Des Barres, Joseph F. W. (Joseph Frederick Wallet). "Coast of Maine showing entrances of Blue Hill Bay, Isle of Haut Bay, and Penobscot Bay, with Owls Head, Vinalhaven Island, Isle au Haut, and other islands." Map. London: J.F.W. Des Barres, 1776. Norman B. Leventhal Map & Education Center, https://collections.leventhalmap.org/search/commonwealth:3f462w19p (accessed March 29, 2024).