Roughly 2,000 specimens comprise this collection of rocks from New York. All rock types and most stratigraphic formations are represented. The collection is organized by physiographic region. These regions are the Ontario Lowlands, Allegheny Highlands, Tug Hill Plateau, St. Lawrence Lowlands, Adirondack Lowlands, Adirondack Highlands, Mohawk Lowlands, Catskill Highlands, Hudson Lowlands, Champlain Lowlands, Taconic Highlands, Hudson Highlands, and Atlantic (coastal plain) Lowlands. Most specimens are hand-sized. Many were collected in the course of specific geological investigations. Consequently, samples are irregularly distributed statewide. A catalog is available.