For collectors, owning the catalogue of a landmark exhibition (such as the 1966 "Primary Structures" at the Jewish Museum or the 1989 "Magiciens de la Terre" at Pompidou) is a status symbol equal to owning a minor work by an artist in the show.

They offer "crisp color images" and details that allow you to zoom in on textures and brushstrokes.

Provides a definitive record of the pieces shown, their dimensions, media, and provenance.