Try Interlibrary Loan (ILL)! With ILL, you can:
If all else fails, you can always try searching Google Books to see if you can access the partial or full text of the book you need!
Sometimes if the Library doesn't have the full text of an article, you can find it by searching for the article title in Google Scholar.
Dr. Schwab has put books on Reserve in the Library. They can be borrowed for in-library use (up to 4 hours) from the Circulation Desk. Many of these books are important texts on the history of Classical Art, and may be helpful to your research.