Specialized reference works such as encyclopedias provide overviews and can give you a good sense of what's out there and what different approaches are being taken to a given topic. Most of our reference sources are located in the Reference Collection on the main floor of the library. Some are available online.
Lady of Carthage, 5th-6th century Tunisia, Musée National de Carthage
Barcelona Haggadah, 1360-1390, British Library
Guarding of Jordan and Invasion of the Spies, Basilica of Santa Maria Maggiore, c.432-442