O.E.R.

21,198 results found

Map

Pennsylvania

Author: Emery Walker Limited
Source: Library of Congress - Maps
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Publication Date: 1904
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Map

State of Pennsylvania.

Author: Geological Survey (U.S.)
Source: Library of Congress - Maps
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Publication Date: 1977
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Map

State of Pennsylvania

Author: Geological Survey (U.S.)
Source: Library of Congress - Maps
Usage Rights:
Publication Date: 1977
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Map

State of Pennsylvania.

Author: Geological Survey (U.S.)
Source: Library of Congress - Maps
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Publication Date: 1977
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Map

Geological map of the state of Pennsylvania : constructed from original surveys made between 1836 and 1857

Author: Rogers, Henry D. - Geological Survey of Pennsylvania - Rogers, Henry D. (Henry Darwin) - W. & A.K. Johnston Limited
Source: Library of Congress - Maps
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Publication Date: 1857
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Map

Geological map of the state of Pennsylvania : constructed from original surveys made between 1836 and 1857

Author: Geological Survey of Pennsylvania - Rogers, Henry D. (Henry Darwin) - W. & A.K. Johnston Limited
Source: Library of Congress - Maps
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Publication Date: 1857
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Map

A geological and topographical map of Pennsylvania and New Jersey : compiled from the official reports of the geological surveys and from various other sources public and private

Author: Williams, W. - Williams, W. (Wellington) - Lesley, J. P. (J. Peter) - Herline & Hensel - Desilver, Charles
Source: Library of Congress - Maps
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Publication Date: 1857
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Map

Census 2000--Pennsylvania profile : population density by census tract

Author: United States. Bureau of the Census
Source: Library of Congress - Maps
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Publication Date: 2000
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Map

Path of Progress, national heritage tour route. Heritage trails, southwestern Pennsylvania : Pennsylvania memories last a lifetime.

Author: United States. Department of the Interior. Southwestern Pennsylvania Heritage Preservation Commission
Source: Library of Congress - Maps
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Publication Date: 1995
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Map

Path of Progress, national heritage tour route. Heritage trails, southwestern Pennsylvania : Pennsylvania memories last a lifetime.

Map

America's Industrial Heritage Project, southwestern Pennsylvania

Author: United States. National Park Service - America's Industrial Heritage Project
Source: Library of Congress - Maps
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Publication Date: 1989
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Map

Pennsylvania; county subdivisions, townships and places. 1970.

Author: United States. Bureau of the Census
Source: Library of Congress - Maps
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Publication Date: 1971
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Map

Pennsylvania

Author: United States. Bureau of the Census. Data Preparation Division - United States. Bureau of the Census. Geography Division
Source: Library of Congress - Maps
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Publication Date: 1980
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Map

Allegheny National Forest, Pennsylvania : 1958

Author: United States. Forest Service - United States. Forest Service. Eastern Region
Source: Library of Congress - Maps
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Publication Date: 1965
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Map

Allegheny National Forest, Pennsylvania

Author: United States. Forest Service. Eastern Region
Source: Library of Congress - Maps
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Publication Date: 1969
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Map

Allegheny National Forest, Pennsylvania.

Author: United States. Forest Service. Eastern Region
Source: Library of Congress - Maps
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Publication Date: 1969
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Map

Allegheny National Forest, Pennsylvania.

Author: United States. Forest Service. Eastern Region
Source: Library of Congress - Maps
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Publication Date: 1973
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Map

Allegheny National Forest, Pennsylvania.

Author: United States. Forest Service. Eastern Region
Source: Library of Congress - Maps
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Publication Date: 1974
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Map

Allegheny National Forest, Pennsylvania

Author: United States. Forest Service. Eastern Region
Source: Library of Congress - Maps
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Publication Date: 1976
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Map

Allegheny National Forest, Pennsylvnia : 1974

Author: United States. Forest Service
Source: Library of Congress - Maps
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Publication Date: 1981
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Map

Allegheny National Forest, Pennsylvania : 1973

Author: United States. Forest Service
Source: Library of Congress - Maps
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Publication Date: 1981
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Map

Allegheny National Forest, Pennsylvania : 1973

Author: United States. Forest Service - United States. Forest Service. Eastern Region
Source: Library of Congress - Maps
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Publication Date: 1981
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Map

The Allegheny Reservoir fisheries guide

Author: United States. Army. Corps of Engineers. Pittsburgh District
Source: Library of Congress - Maps
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Publication Date: 1994
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Map

Kinzua Dam and Allegheny Reservoir

Author: United States. Army. Corps of Engineers. Pittsburgh District
Source: Library of Congress - Maps
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Publication Date: 2000
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Map

Allegheny Portage Railroad National Historic Site, Pennsylvania

Author: United States. National Park Service - Townsend, L. Kenneth
Source: Library of Congress - Maps
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Publication Date: 1994
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