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A Geological Map of Maryland
(Baltimore: Maryland Geological Survey, 1897)
Scale 1:1,000,000. Size of original printed map height 9 inches, width 15.75 inches.
A Preliminary Isognic Map of Maryland including Delaware and the District of Columbia for January 1, 1900
(Baltimore: Maryland Geological Survey, 1897)
Scale 1:1,000,000. Map is from Maryland Geological Survey, 1897; Volume 1, Plate 14. Size of original printed map height 9 inches, width 16 inches.
A Map Showing Preliminary Lines of Equal Magnetic Inclination and the Preliminary Lines of Equal Horizontal Force for Maryland on January 1, 1897
(Baltimore: Geological Survey of Maryland, 1897)
Scale 1:1,900,800. Maryland Geological Survey, 1897; Volume 1, Plate XVI. Size of original printed map height 9.25 inches, width 5.75 inches.