He also translated Peter Weiss's "Die Ermittlung" ("The Investigation ") into English for the works premiere on Broadway in 1966, and is the author of the libretto of William Russo's chamber opera"The Shepherds' Christmas" (1988).
He also translated Peter Weiss's "Die Ermittlung" ("The Investigation ") into English for the works premiere on Broadway in 1966 and translated Heinrich von Kleist's"The Broken Pitcher " for its New York premiere in 1981. He is also the author of the libretto of William Russo's chamber opera"The Shepherds' Christmas" (1988).