Henry Holt will publish the book. A timeline for its release was not announced. It is characterized as "the definitive, comprehensive account of Williams's life."
"Robin Williams was a cultural hero of mine. In the encounters and interactions I was able to share with him, he was always gentle and generous, humane and thoughtful and hilarious," Itzkoff said in a statement announcing the publication.
Williams died Aug. 11 at the age of 63.
Williams starred in a number of theatrical productions, including Mike Nichols鈥� 1988 Off-Broadway version of Waiting for Godot, co-starring with ; and his own one-man show, . In 2011 he made his acting debut on Broadway in the title role of Rajiv Joseph鈥檚 drama .
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