Mount Desert Island, Looking north through Green Mountain Gorge. Acadia National Park, Maine. 1907.

Album caption: Mount Desert Island, Maine, looking north through Green Mountain Gorge from point on E. slope, showing joints permitting the development of the gorge by plucking and post-glacial talus due to frost action. D. 8, ex. 1/5 sec., light clouds, 2:30 P.M., September 14, 1907. Handwritten notes in album caption: Mt. Desert quad., Hancock County, S-3, S-2. Index card: Alden, W.C. 301 - Mount Desert Island, looking north through Green Mountain Gorge from point on east slope, showing joints permitting the development of the gorge by plucking and post-glacial talus due to frost action. Mount Desert quadrangle, Hancock County, Maine. September 14, 1907. Personal communication from Duane Braun on 11/11/2015: Mount Desert [...]