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31. Connecticut: Norwich sheet [1900 reprint]
1892. United States. Geological Survey. This is a scanned historical map of the Norwich Quadrangle in Connecticut shown at a scale of 1:62,500. This map was created by the US Geological S... US Geological Survey.
32. Connecticut: Norwich sheet [1911 reprint]
1892. United States. Geological Survey. This is a scanned historical map of the Norwich Quadrangle in Connecticut shown at a scale of 1:62,500. This map was created by the US Geological S... US Geological Survey.
33. Connecticut: Norwich sheet [1934 reprint]
1892. United States. Geological Survey. This is a scanned historical map of the Norwich Quadrangle in Connecticut shown at a scale of 1:62,500. This map was created by the US Geological S... US Geological Survey.
34. Connecticut-New York: Cornwall Quadrangle [1907 reprint]
1903. United States. Geological Survey. This is a scanned historical map of the Cornwall Quadrangle in Connecticut shown at a scale of 1:62,500. This map was created by the US Geological ... US Geological Survey.
35. Connecticut-New York: New London sheet [1933 reprint]
1893. United States. Geological Survey. This is a scanned historical map of the New London Quadrangle in Connecticut shown at a scale of 1:62,500. This map was created by the US Geologica... US Geological Survey.
36. Connecticut-Rhode Island: Moosup sheet [1905 reprint]
1893. United States. Geological Survey. This is a scanned historical map of the Moosup Quadrangle in Connecticut shown at a scale of 1:62,500. This map was created by the US Geological Su... US Geological Survey.
37. Connecticut-Rhode Island: Moosup sheet [1932 reprint]
1893. United States. Geological Survey. This is a scanned historical map of the Moosup Quadrangle in Connecticut shown at a scale of 1:62,500. This map was created by the US Geological Su... US Geological Survey.
38. Contours, 10 ft interval, Non-Watershed area
2010. Towill Inc. Elevation Contours of Napa County for non-watershed Area, 10 foot interval. These are the 10 ft contours produced during the 2002/2003 Orthophotog... Napa County (Calif.). County Of Napa.
39. Contours 2ft: Philadephia, Pennsylvania
2004. City of Philadelphia Water Department - Information Systems Technology. Planimetric Coverage containing the delineation of topographic contours at two foot intervals. Annotation of Contour Line elevations exists. Annota...
40. Contours, 5 ft interval, Watershed area
2010. Towill, Inc.(comp.). Elevation Contours of the Napa River Watershed Area, 5 foot interval. The area covered by this data is referred to as the Watershed Area because i... Napa County (Calif.). County Of Napa.