Walter A. Lawrance Androscoggin River Studies Nineteenth Annual Report, November, 1961, Androscoggin River Studies, Box 3, Folder 5, Walter A. Lawrance Papers, Edmund S. Muskie Archives and Special Co..
Walter A. Lawrance Androscoggin River Studies Nineteenth Annual Report, November, 1961, Androscoggin River Studies, Box 3, Folder 5, Walter A. Lawrance Papers, Edmund S. Muskie Archives and Special Collections Library, Bates College, Lewiston, Maine.