For this assignment, you may want to search by subject using emotions in art or combine keywords such as art or painting with emotions or feelings. Another way to search is to combine the keyword art with emotional topics such as art and war, in this example you'll have to quickly scroll through many results, but you'll find some good sources.
Books in the library are organized by call number according to the Library of Congress classification system which groups items by subject, so you can often simply browse the shelves. Here are some relevant subjects and their call numbers:
|Drawing, Design, Illustration||NC|
Does the library have textbooks? Yes!
Search the Course Reserves tab in OneSearch by course or book title. You'll see which library has the course material, whether it is available and also the length of time it is available for check out.