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Relief shown by hachures.
Relief shown by hachures
Prime meridians: Washington and Greenwich.
Entered according to Act of Congress in the year 1836 by J.H. Colton & Co. in the Clerk's Office of the District Court of the Southern District of New York.
Relief shown by shading.
Relief shown by hachures and spot heights.
Shows county boundaries, towns and railroads.
Shows areas underlain by coal bearing rocks and principal coal producing districts.
Shows areas underlain by coal bearing rocks, and principal coal producing districts.