Increasingly, when art is purchased, the history of past ownership is under scrutiny, and auction catalogues play an absolutely central role when private collectors, museums, and dealers conduct research. Therefore, it is vital to the art market that sales catalogues be accessible, and the Frick Art Reference Library, one of the world’s richest collections of such material, is pleased to announce two advances in this area that further strengthen its role as a leading site internationally for provenance research.