Maine Geological Survey (Department of Economic Development), Bulletin 23. Papers on plant fossils of the Trout Valley Formation, Silurian fossils on Lawler Ridge, Limestone Hill in Somerset county, Fish River Lake Formation, Devonian slates in the northern Appalachians, Rb-Sr ages of Silurian-Devonian volcanics in eastern Maine, structure of Sawyer Mountain area, origin and development of the Wells Beach areahttps://digitalmaine.com/mgs_publications/1038/thumbnail.jp
