Here are a few lists of books by period, plus books on Christian iconography. The Find Books page (see tabs) will give you suggestions for to searching in more depth.
Most lists include books that can be requested through Summit
The Dictionary of Art is a great place to start. It is available in print only in the library on the Salem Campus.
The Dictionary of Art by Larousse Encyclopedia of Byzantine and Medieval Art by Illustrated Dictionary of Art Terms by 
The Oxford Dictionary of Art by 
Arts and Humanities Through the Eras by 
The Dent Dictionary of Symbols in Christian Art by 
Dictionary of Subjects and Symbols in Art by 
Dictionary of Symbols in Western Art by 
Encyclopedia of Comparative Iconography by 
How to Read Bible Stories and Myths in Art by 
Illustrated Dictionary of Symbols in Eastern and Western Art by 
Photo Credit: Saint Barbara. North French. Painted & gilt limestone Courtesy of the Metropolitan Museum of Art under a Creative Commons Zero (public domain) license.
