Pennsylvania Contact: Pennsylvania Geological Survey Postal Address: Pennsylvania Geological Survey Library 3240 Schoolhouse Road Middletown, PA 17057-3534 Voice Telephone: 717-702-2020 Contact: Pennsylvania State University Postal Address: Earth and Mineral Sciences Library 105 Deike Building University Park, PA 16802 Voice Telephone: 814-865-9517 Contact: State Library of Pennsylvania Postal Address: Office of Commonwealth Libraries Bureau of State Library 333 Market St. Harrisburg, PA 17126-1745 Voice Telephone: 717-787-2327 or 717-787-3273