Berkeley published the first issue of the Theatrical Index on November 9, 1964. This up-to-date weekly publication has since grown into a comprehensive, insiders' guide to the "who, what, where and when of the American Theater." He retired from the Index in 2007, but continued as a consultant until 2010.

His contributions to the theater community also included serving as a longtime member of the Tony Awards nominating committee. He was inducted into the Theatre Hall of Fame in 2003.

A memorial service will be announced at a later date. Memorial contributions in his memory may be made to The Actors Fund of America, 729 Seventh Avenue, New York, New York, 10019.