The Penn Libraries is fortunate to have the entire electronic backfile and current issues available for the Geological Society of American book material. This collection includes GSA Special Papers – dedicated to publishing rapidly evolving topics; GSA Memoirs – long term studies; and GSA Field Trips – geological guides to particular areas of the United States, usually designed to coincide with field trips at the organizations’ meetings. The Geological Society of America is a global professional organization started in 1888. It seeks to “advance geoscience research and discovery, service to society, stewardship of Earth, and the geosciences profession”. That mission is accomplished by the publication of journals, books, maps and meeting abstracts. This collection allows Penn geology students the ability to access papers such at Fossil Crustacea of the Atlantic and Gulf Coastal Plain, Fossil Snakes of North America, and Paleobiology of the Dinosaurs.