The Institut national d’histoire de l’art in Paris (INHA), whose Library will open in 2008, will have one of the best collections of sales catalogues in the world, already estimated at more than 200,000 items. In 2003, in order to improve access, INHA undertook the retrospective conversion of the records describing this material. The establishment of a committee of librarians and researchers charged with developing the Library’s acquisition policy is providing an opportunity to review the future development of the collection as well as the possibility of creating a worldwide network of information, based in France, in this subject area.