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By: Lesquereux, Léo, - Geological Survey of Pennsylvania. - Pennsylvania. Board of Commissioners for the Second Geological Survey.Edition:Publication info: Harrisburg, Board of Commissioners for the Second Geological Survey, 1879-84Volume: Atlas (1879)Series:Holding Institution: Wellesley College LibrarySubjects:BHL Collections: Fossil Stories
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By: Fontaine, William Morris, - White, I. C. (Israel Charles), - Geological Survey of Pennsylvania. - Pennsylvania. Board of Commissioners for the Second Geological Survey.Edition:Publication info: Harrisburg, Pub. by the Board of Commissioners for the Second Geological Survey, 1880Volume:Series:Holding Institution: Multiple institutionsSubjects:BHL Collections: