Below you will find links to databases that the OES libraries subscribe to; all can be accessed both on campus and at home. Most of the databases only require your OES google login for remote access.
If we don't have a book on your subject, check the resources below. Washington County and Multnomah County Public Libraries have much bigger collections than we do, and chances are they will have something on your subject. Still not finding what you need? Check WorldCat for library holdings around the world, and send the citation to Erika, who can order just about anything from Interlibrary Loan.