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Generalized Geologic Map of Maryland
(Baltimore: Maryland Geological Survey, 1967)
Map of Central Cecil County showing Areal Distribution of Clay- Bearing Formations of the Potomac Group
(Baltimore: Maryland Geological Survey, 1902)
Scale 1:62,500. Map is from Maryland Geological Survey, 1902; Volume 4, Plate XLV. Size of original printed map height 6.25 inches, width 7.75 inches.
Map showing Areal Distribution of Clay-Bearing Formations of the Potomac Group in the Region Southwest of Baltimore City
(Baltimore: Maryland Geological Survey, 1902)
Scale 1:62,500. Map is from Maryland Geological Survey, 1902; Volume 4, Plate XLVII. Size of original printed map height 6.25 inches, width 7.75 inches.
Map of Central Maryland showing Rocks Yielding Residual Clays
(Baltimore: Maryland Geological Survey, 1902)
Scale 1:1,250,000. Map is from Maryland Geological Survey, 1902; Volume 4, Plate LVIII. Size of original printed map height 5.25 inches, width 7.5 inches.
Map of Baltimore County and Baltimore City showing the topography and election districts
(Baltimore: Maryland Geological Survey, 1963)
Map Showing the Distribution of the Silurian Formations of Maryland
(Baltimore: Maryland Geological Survey, 1922)
Scale 1:190,080. Map is from Maryland Geological Survey, 1922; Systematic Report, Silurian, Plate I. Size of original printed map height 19.25 inches, width 8.00 inches.
Map Showing the Distribution of the Upper Cretaceous Formations of Maryland
(Baltimore: Maryland Geological Survey, 1915)
Scale 1:312,500. Size of original printed map height 18.25 inches, width 19.25 inches.
Map of Maryland Showing the Geological Formations and Agricultural Soils
(Baltimore: Maryland Geological Survey, 1907)
Scale 1:500,000. Size of original printed map height 32.75 inches, width 19.25 inches.
Map Showing the Approximate Position of the Shore Line of Wicomico Sea in Maryland, Delaware, The District of Columbia, and parts of Virginia and New Jersey
(Baltimore: Maryland Geological Survey, 1906)
Scale 1:1,250,000. Size of original printed map height 13.75 inches, width 8.25 inches.
Map Showing Hypothetical Position of Shore Line of Lafayette Sea in Maryland, Delaware, the District of Columbia and Parts of Virginia and New Jersey
(Baltimore: Maryland Geological Survey, 1906)
Scale 1:1,250,000. Size of original printed map height 13 inches, width 8.25 inches.