Two large-format topographic maps of the Kettle Creek area in Clinton County, Pennsylvania, with field notes from oil and gas well surveys in 1952.

• Both maps were compiled by the United States Geological Survey and printed in 1948. Their titles are: Hammersley Fork Quadrangle and Tamarack Quadrangle.



• They are drawn on a scale of 1:24,000, which provides extraordinary detail, with contour intervals at 20 feet.



• Side-by-side these two maps provide continuous coverage of the area bounded by longitude 77°45' W to 78°00' W and latitude 41°22'30" N to 41°30' N.



• There are numerous notes in ink and pencil in the margins and at a couple of dozen locations on both sides of a marked fault line east of Kettle Creek.



• Both maps have been dissected and mounted on linen — to facilitate use of the maps during research and field work.



• Opened up, each map measures 26¼" x 17½". Placed side-by-side the overall size of the two maps is 26¼" x 35".



• These are the original 1948 maps, published by the U.S. Geological Survey, Department of the Interior, with the cooperation of the State of Pennsylvania Department of Internal Affairs.



• The author of the field notes marked on the maps is not identified. A couple of the notes are dated from 1952, which correlates to the continuing activity following the discovery in early 1950 of an Oriskany gas pool (Lower Devonian) in the Leidy field of Clinton County, the center of interest on these two maps.



• These maps are a unique and remarkable piece of local history map and offer a look back from today's perspective, when many of the oil and gas wells in the area have been abandoned and are possible sources of greenhouse gas emissions.



• Condition:  Both maps are in very good, used condition, with minor wear and markings consistent with having been carried by a surveying party through the challenging terrain of north central Pennsylvania. Please see the scans and feel free to ask any questions.



• Buy with confidence! We are always happy to combine shipping on the purchase of multiple items — just make sure to pay for everything at one time, not individually.