40 Years of Chez Panisse, available now at booksellers
The Grand Opening ceremonies took place earlier where Governor Jerry Brown said a few words, on August 26th 2011, at the Berkeley Art Museum, and a dinner party was given afterwards for a small group of friends at Chez Panisse. Amazingly, Jeremiah Tower was one of the guests at the table, which means they must have put past quarrels, about who was responsible for creating California Cuisine aside.
The San Francisco Chronicle has run a protracted article about 40 years of Chez Panisse, offering lots of information here.