Summit Borrowing allows you to get books from the other libraries that belong to the same consortium of academic libraries in the Pacific Northwest. Instead of just one library, it's like you've got 37! Books arrive in 4-5 days, so give yourself plenty of time to get your research started! Look for the "Request from Summit Library" button in Primo.
Interlibrary Loan is good for both books and articles, and allows you to borrow materials from anywhere in the world! Most articles arrive within 3-4 days, while books can take up to two weeks. Look for the "request item from interlibrary loan" button or "Interlibrary Loan (Illiad)" link in Primo.