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Start Over Author Geological Survey of Pennsylvania Subject Mines and mineral resources

1. Grand atlas. contains thirty sheets relating to the Durham and Reading Hills and bordering valleys in Northampton, Lehigh, Bucks and Berks counties and thirteen sheets relating to the South Mountains in Franklin, Cumberland and York counties : 1885 / [cartographic material] : Division IV, South Mountain and Great Valley topographical maps, Part I

Yale Public content
1885. 2012-03-14T13:56:57Z. 2012-07-05T13:00:13Z. Geological Survey of Pennsylvania. Second Geological Survey of Pennsylvania. English. Public. Pennsylvania, Ironton, Lehigh County, Northampton County, Northampton County (Pa.), Lehigh County (Pa.), Bucks County (Pa.), Berks County (Pa.), South Mountain Region (Lehigh County, Pa.), and Ironton (Pa.).

2. Grand atlas. contains twenty six sheets relating to the eastern ends of the Western Middle and Southern Fields in Carbon, Schuylkill, Columbia and Northumberland counties / [cartographic material] : Division II, Anthracite coal fields, Part 1

Yale Public content
1884. 2012-03-14T13:31:17Z. 2012-07-11T15:16:56Z. Geological Survey of Pennsylvania. Second Geological Survey of Pennsylvania. English. Public. Pennsylvania, Carbon County, Columbia County, Northumberland County, and Schuylkill County.

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