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Topographic Maps of the Durham and Reading Hills or the South Mountains with the bordering valleys of Northampton, Lehigh, Bucks and Berks Counties

From: The Second Geological Survey of Pennsylvania, 1883; Harrisburg


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  Index  
1:136,720
  Sheet 1  
1:19,200
  Sheet 2  
1:19,200
  Sheet 3  
1:19,200
  Sheet 4  
1:19,200
  Sheet 5  
1:19,200
  Sheet 6  
1:19,200
  Sheet 7  
1:19,200
  Sheet 8  
1:19,200
  Sheet 9  
1:19,200
  Sheet 10  
1:19,200
  Sheet 11  
1:19,200
  Sheet 12  
1:19,200
  Sheet 13  
1:19,200
  Sheet 14  
1:19,200
  Sheet 15  
1:19,200
  Sheet 16  
1:19,200
  Sheet 17  
1:19,200
  Sheet 18  
1:19,200