Geology of the Wellsville Quadrangle, New York (New York State Museum Bulletin, April 1942, No. 326)

135 pp. Includes maps and geologic sections in pocket. CONTENTS: Preface; Acknowledgments; Description of Wellsville quadrangle; Methods of Field Work; Stratigraphy: General - Upper Devonian: Canadaway Group; Machias Formation, Cuba Formation - Conneant Group: Wellsville Formation - Hinsdale Sandstone - Whitesville Formation - "Catskill" Sedimentation - Germania Formation - Conewangan Series: Cattaraugus Formation; Oswayo Formation - Mississippian - Pennsylvanian: Olean Conglomerate; Petrography of Some Upper Devonian Rocks; Structural Geology; Upper Devonian Problem; Geological History and Paleogeography; Economic Geology; Interesting Places to Visit; Bibliography; Index.