Summon will usually be your best starting point for finding articles, books and other material on your subject. Watch a video introduction to Summon (6 mins) or see our collection of guides to making the most of Summon.
Art & Architecture Source is a major database of journal articles. Not all are in Summon, so it's worth searching separately.
Sales catalogues guide: info about finding sales catalogues, at SIA, at other libraries, and online.
Price databases guide: links and information.