There are a number of geological societies in Pennsylvania, most with interesting acronyms. The largest societies are HAGS, NAGS, PiGS, and PhaGS, the Harrisburg Area, Northern Alleghenies, Pittsburgh, and Philadelphia Geological Societies, respectively.
There are also a multitude of local rock and mineral clubs.
If your society or club has a homepage on the World Wide Web, please let me know and I will provide a link to it from this page.
Delaware Valley Paleontological
Society
Pennsylvania Council of Professional Geologists
Pennsylvania Geological Survey
Links to State Geological Surveys
US Geological Survey- Water Resources of Pennsylvania
Pennsylvania Academy of Science