Books and other materials including CDs, DVDS, and more, can be found using The CAT.
Use the Advanced Search for more options, including the ability to limit searches by date, a useful tool for locating primary sources (for example, look for "African-Americans" and limit to 1950-1960).
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.
If Penn State does not have what you want request it through our InterLibrary Loan system
If you are still not finding what you need, submit a request for the title through ILLIAD, the Libraries' interlibrary loan service. First time users must register
E-Books
Many historical books have been scanned and are available online. Two significant collections are: