WorldCat Search this comprehensive online catalog of library holdings. Lists books, journals, maps, recordings, films, scores, and other materials located in public, academic, corporate, school and specialized libraries all over the world. Check Worldcat for holdings of material that are not available at Penn. Available items may be requested through Interlibrary Loan.
OAIster Use this subcatalog of Worldcat. OAIster is union catalog of digital resources from open archive collections representing multidisciplinary resources from thousands of contributors worldwide. Records contain a digital object link allowing users access to the object in a single click.