This index is the type of reference text that librarians and researchers rejoice over. The A.C.I. was compiled and realized by Noelle Corboz and Cécile de Pebeyre under the direction of Marc Blondeau and Thierry Meaudre. The subtitle defines it succinctly, "Catalogues Raisonnés & Critical Catalogues of Artists 1780-2008," and further, "Painting, Sculpture, Works on Paper, Prints, Contemporary Media." Entries are alphabetical by artist name, with place and date for birth and death. Bibliography proceeds chronologically from date of publication, with separation for genre. Details of publication are included, as well as ISBN number. A thoughtful introduction tracing the history and evolution of the catalogue raisonné written by Rainer Michael Mason is also presented. An author index follows, linking to the corresponding artist. Prior to the release of this volume, art reference librarians relied on the Wolfgang M. Freitag text Art Books: A Basic Bibliography of Monographs on Artists, published in 1997. This more up to date volume will indeed be a boon to research. The A.C.I. will be shelved behind the reference desk for ease of access.