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TitleChester Quadrangle
Date Created1970
DescriptionUnited States Department of Interior Geological Survey, U.S. Department of the Army Corps of Engineers, Chester Quadrangle, 7.5 Minute Series, Topographic – in color, 1954, photorevised in 1970. The...
Time Period1970-1979
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TitleBreathing cave system
Date Issued1976-06
DescriptionSurveyed in 1959-1960, 1965-1969 by Kittatinny Grotto and Northern New Jersey Grotto, the map shows multiple entrances and openings to the surface.
Time Period1970-1979