The U.S. Coast Survey created highly detailed topographic maps beginning in 1834. These maps eventually became known as topographic sheets or "T-sheets." This is a collection of 1,887 topographic sheets dating from 1834 to 1911, courtesy of the NOAA Central Library in Silver Spring, Maryland. The sheets have been grouped by state and then ordered geographically along the coast. The digital files were created by scanning photographic negatives the original sheets and then inverting the images to a positive format. The negatives are gross reductions in size from the map originals. The collection was scanned at a resolution of 1200dpi. The variance in the quality of the images in this collection is a function of the condition of the photographic negatives from which they were derived.

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Alabama   Maine   North Carolina
California - Northern   Maryland   Oregon
California - Southern   Massachusetts   Pennsylvania
Connecticut   Mississippi   Rhode Island
Delaware   Missouri   South Carolina
District of Columbia   New Brunswick   Tennessee
Florida - Atlantic Coast   New Jersey   Texas
Florida - Gulf Coast   New York - North Side of Long Island   Vermont
Georgia   New York - South Side of Long Island   Virginia
Illinois   New York - Bronx, Manhattan, Staten Island   Washington
Louisiana   New York - Hudson River, Lake Champlain    
Louisiana - Mississippi River   New Hampshire    

© University of Alabama
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