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General Information

  • Title: The Keyser limestone and Helderberg group
  • Author(s): Swartz, F.M.
  • Publishing Organization: Pennsylvania Geological Survey
  • Series and Number: General Geology Report 19 [p. 29-91]
  • Larger Work: Willard, Bradford, Swartz, F.M., and Cleaves, A.B., The Devonian of Pennsylvania
  • Publication Date: 1939
  • Map Scale: 1:4,674,098
  • Cross Section: Yes
  • North Latitude: 41° 5' 45" N (41.0957)
  • South Latitude: 39° 44' 2" N (39.7340)
  • East Longitude: 74° 58' 4" W (-74.9678)
  • West Longitude: 78° 23' 21" W (-78.3891)
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