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21571. Topographic sheets. Pennsylvania, Harrisburg quadrangle, lat. 40° 15′-40° 30′, long. 76° 45′-77°. Scale 1: 62,500, contour interval 20 ft.

Corporate/Agency Authors:: Geological Survey and Interior Department
Publisher:: Geological Survey
Date:: Edition of Oct. 1899

21572. Topographic sheets. Pennsylvania, Pittston sheet, lat. 41° 15′-41° 30′, long. 75° 45′-76°. Scale 1:62,500, contour interval 20 ft.

Corporate/Agency Authors:: Geological Survey and Interior Department
Publisher:: Geological Survey
Date:: Edition of Sept. 1894, reprinted Oct. 1899

21573. Topographic sheets. Pennsylvania-New Jersey, Delaware Water Gap sheet, lat. 40° 45′-41°, long. 75°-75° 15′. Scale 1:62,500, contour interval 20 ft.

Corporate/Agency Authors:: Geological Survey and Interior Department
Publisher:: Geological Survey
Date:: Edition of Nov. 1893, reprinted Oct. 1899

21574. Topographic sheets. South Dakota, Alexandria quadrangle, lat. 43° 30′-44°, long. 97° 30-98°. Scale 1:125,000, contour interval 20 ft.

Corporate/Agency Authors:: Geological Survey and Interior Department
Publisher:: Geological Survey
Date:: Edition of Oct. 1899

21575. Topographic sheets. Tennessee-Virginia-North Carolina, Abingdon sheet, lat. 36° 30′-37°, long. 81° 30′-82°. Scale 1:125,000, contour interval 100 ft.

Corporate/Agency Authors:: Geological Survey and Interior Department
Publisher:: Geological Survey
Date:: Edition of Aug. 1886, reprinted Oct. 1899

21576. Topographic sheets. Virginia-West Virginia, Lewisburg sheet, lat. 37° 30′-38°. long. 80°-80° 30′. Scale 1:125,000, contour interval 100 ft.

Corporate/Agency Authors:: Geological Survey and Interior Department
Publisher:: Geological Survey
Date:: Edition of Nov. 1889, reprinted Oct. 1899

21577. Maps. Map of Connecticut. Scale 1:125,000, contour interval 100 ft.

Corporate/Agency Authors:: Geological Survey and Interior Department
Publisher:: Geological Survey
Date:: 1893, reprinted Sept. 1899

21578. Maps. United States, base map. Scale 100 in. =0.9 in.

Corporate/Agency Authors:: Geological Survey and Post-Office Department
Publisher:: Geological Survey
Date:: Edition of Dec. 1896, reprinted Sept. 1899

21579. Maps. United States, contour map. Scale 100 m. =0.9 in.

Corporate/Agency Authors:: Geological Survey and Post-Office Department
Publisher:: Geological Survey
Date:: Edition of Dec. 1896, reprinted Sept. 1899

21580. Maps. United States, relief map. Scale 100 m. = 0.9 in.

Corporate/Agency Authors:: Geological Survey and Post-Office Department
Publisher:: Geological Survey
Date:: Edition of Dec. 1896, reprinted Sept. 1899

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