When you find an item in the catalog that has a Find & Request link, then the book or video is checked out or not in our collection.
If a book you need is not available either through PSU or Summit, you can request it (mostly) for free through Interlibrary Loan (ILL). It can take up to 12 days to receive a book through Interlibrary Loan.
The PSU Library does not order textbooks through Interlibrary Loan.
After you find a useful book in the library catalog, scroll down to the "Details" tab to the book's "Subjects." Here you'll find a list of related subjects that you might consider adding to your search. You can also click on a subject link in the record; clicking on a subject such as "Older people -- Care" would bring up a list of all the Library's books, journals, and other resources on that topic.
Sometimes browsing the library stacks can help you find books you didn't even know you were looking for. The following are good areas to peruse.
Maps of the library are available at the 2nd floor Reference Desk, elevator lobbies, and also online.