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Looking south from Cobham Hill over surface of the dissected Harrisburg peneplain. Shows the even skylines due to peneplanation. Warren County, Pennsylvania. 1909. Figure 4 in U.S. Geological Survey. Folio 172. 1910.
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Looking south from Cobham Hill over surface of the dissected Harrisburg peneplain. Shows the even skylines due to peneplanation. Warren County, Pennsylvania. 1909. Figure 4 in U.S. Geological Survey. Folio 172. 1910.
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Terrace deposits of Kansan or pre-Kansan age at quarry in the eastern part of Warren, finely laminated and cross-bedded sand, clay and small gravel, overlain by coarse gravel and boulder deposits. Warren County, Pennsylvania. 1909.
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View north across Allegheny River to bench in east part of Tidioute. Warren County, Pennsylvania. May 9, 1921.
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Looking south from Cobham Hill over surface of the dissected Harrisburg peneplain. Shows the even skylines due to peneplanation. Warren County, Pennsylvania. 1909. Figure 4 in U.S. Geological Survey. Folio 172. 1910.
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Terrace deposits of Kansan or pre-Kansan age at quarry in the eastern part of Warren, finely laminated and cross-bedded sand, clay and small gravel, overlain by coarse gravel and boulder deposits. Warren County, Pennsylvania. 1909.
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View down Allegheny River to Corydon. Ice jam caused flat to be flooded in 1919. Warren County, Pennsylvania. May 10, 1921.


    map background search result map search result map Looking south from Cobham Hill over surface of the dissected Harrisburg peneplain. Warren County, Pennsylvania. 1909. Looking south from Cobham Hill over surface of the dissected Harrisburg peneplain.  Warren County, Pennsylvania. 1909. Looking south from Cobham Hill over surface of the dissected Harrisburg peneplain. Warren County, Pennsylvania. 1909. Looking south from Cobham Hill over surface of the dissected Harrisburg peneplain. Warren County, Pennsylvania. 1909. Looking south from Cobham Hill over surface of the dissected Harrisburg peneplain.  Warren County, Pennsylvania. 1909. Looking south from Cobham Hill over surface of the dissected Harrisburg peneplain. Warren County, Pennsylvania. 1909.