Kunsthistorisches Institut Florenz (KHI) The online catalogue includes information about monographs, exhibition catalogues, essays, reviews and periodical articles on European art and architecture, with a primary (but by no means exclusive) focus on Italy.
Warburg Insititute (London) Major centrefor the study of the classical tradition as manifested in later centuries (e.g. in Western Europe, Byzantium and early Islamic countries). Its library, photographic collection and archive all have extensive holdings.
WorldCat Massive union catalogue of countless libraries worldwide. Useful for finding books and archival materials beyond Oxford.
Gli anni della Cupola: The Years of the Cupola Compiled by Margaret Haines. Online edition of the entire contents of the archive of Florence’s Opera del Duomo for the years during which Brunelleschi’s cupola was planned and constructed (1417-1436).
Medici Archive (Florence, Italy) Access to the Medici Grand Ducal Archive through scans and transcriptions of original documents. Individuals can be searched according to profession (e.g., actors, architects, artists, collectors, poets, printers, patrons, etc.)
Dictionaries & encyclopedias