County and Regional Histories & Atlases: Pennsylvania provides portraits of people, places and events, putting the state’s local history into current context with the examination of demographic, social and cultural transformations. Included in this collection of 283 titles are tables and lists of vital statistics, military service records, municipal and county officers, chronologies, portraits of individuals and views of urban and rural life. The atlases provide additional information on land use and settlement patterns and scarce early town and city plans. Use this collection to support research in areas such as regional studies, social history, genealogy, economics and business.

This is the online catalog of materials owned by Penn State Libraries. All formats (books, journals, audiovisuals, maps, recordings, etc.) are included. Circulation status for individual items is also provided. Coverage: Presently contains about 7 million records. Updates: Continuous up-to-the-minute as new records are added.

OCLC WorldCat database is the OCLC online union catalog. It contains over 43 million records describing library holdings around the world.

Sponsored by the libraries of the Committee on Institutional Cooperation, the University of California, and other partners, HathiTrust is a repository of digitized materials in all disciplines. Its content--primarily scanned books and journals-- may be searched via authors, titles, subjects, and other data elements.