Most Art books can be found in the N (Fine Arts) section of the library and have call numbers that start with the letter "N." (There are exceptions, however, like Photography books...which are located in TR range.)
The classification system breaks down the N section into the following eight classifications:
N -- Visual Arts (General)
NA -- Architecture
NB -- Sculpture
NC -- Drawing. Design. Illustration.
ND -- Painting
NE -- Print Media
NK -- Decorative Arts. Applied Arts.
NX -- Arts in general.
Items in the General Collection can be checked out, and items in the Reference Collection are reserved for In-Library Use only.