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Publication Extents

Not all publications have extents, not all extents are completely accurate
Mercersburg-Chambersburg folio, Pennsylvania
George W. Stose
1909, Folios of the Geologic Atlas 170
The Mercersburg and Chambersburg Qquadrangles are located in the south-central part of Pennsylvania, between parallels 39° 45' and 40° and meridians 77° 30' and 78°, and contain about 458 square miles.  This area embraces the larger part of Fanklin County and a small part of Fulton County.  Its southern border...
Thirtieth annual report of the Director of the United States Geological Survey
George Otis Smith
1909, Annual Report 30
The appropriations for the work of the United States Geological Survey for the fiscal year 1908-9 comprised items amounting to $1,590,680. The plan of operations was approved by the Secretary of the Interior, and a detailed statement of the work of the various branches and divisions of the Survey is...
The topographic and geologic atlas of the United States
Water Resources Division, U.S. Geological Survey
1909, Report
The Geological Survey is making a topographic and geologic map of the United States. The topographic map is being published in separate sheets and the geologic map in parts called folios. Each folio includes a topographic map and geologic maps of a small area, together with explanatory and descriptive text....