Addenda & Revisions
The Richard Diebenkorn catalogue raisonné documents all of the artist’s unique works known to the editors and the Foundation at the time of publication. Works that have emerged after publication are shown here in Addenda. Information unavailable to us at the time of publication, such as an unresolved collection credit at the time of our provenance research deadlines, is shown here in Revisions. The final dates for provenance research were: volume 2 (1933–1955), December 1, 2012; volume 3 (1955–1966), June 1, 2013; and volume 4 (1967–1992), December 1, 2013.