Geological map of the state of Pennsylvania : constructed from original surveys made between 1836 and 1857 /
Rogers, Henry D. (Henry Darwin), 1808-1866.
W. & A.K. Johnston Limited.
Geological Survey of Pennsylvania.
cartographic
[Harrisburg? : Pennsylvania Geological Survey,
1858]
eng
Relief shown by hachures.
"To accompany the final report on the Geological Survey of the state 1858."
Originally published in 4 sheets.
"Entered according to act of Congress, in the year 1858, by Henry D. Rogers ... Eastern District of Pennsylvania."
Washington D.C. meridian.
Includes numerous black-and-white cross-sections.
LC copy sectioned to 45 panels.
Geology--Pennsylvania--Maps.
United States Pennsylvania.
Available also through the Library of Congress Web site as a raster image.
http://hdl.loc.gov/loc.gmd/g3821c.ct004156