John Richardson in 1965.

LEOPALD JOSEPH/ANL/REX/SHUTTERSTOCK

John Richardson, the larger-than-life art historian whose multifarious career both shaped the postwar art scene as it developed and helped define it historically, has died at the age of 95. The news was first reported by the Art Newspaper.

Richardson’s long life included turns as an upper-echelon art dealer, lauded curator, and incisive critic, but it is his multivolume biography of Pablo Picasso—one of the many artists with whom he was close friends—that is his crowning achievement.

To date, three volumes of Richardson’s Picasso biography have been published, running through 1932; the publication date for the fourth volume has not yet been set.

This post will be updated.