If you find a book, article, or other source that Preus Library doesn't own, submit an Interlibrary Loan request! A library that does have that resource can share it with us.
Look for a Request through Interlibrary Loan link in the catalog and in databases, and log in with your Norse Key. If you've never used ILL before, you'll have to set up your account first, but don't worry--it's quick and easy!