Search for journal articles on topics in the arts, humanities, social sciences and some math/science. Most journals have volumes/issues dating from the 19th century to within 3-5 years of present day. (ITHAKA)
Search for journal articles on most topics. This multi-disciplinary database is a good place to start if you don't know where else to begin. (EBSCO)
Search for ebooks on the history of art, architecture, decorative arts, photography, and design. (Yale University Press)