This article is from the Theatre FAQ, by aku@leland.Stanford.EDU (Andrew Chia-Tso Ku) with numerous contributions by others.
Composer listed first, then librettist.
WEST SIDE STORY (1957; Leonard Bernstein; Arthur Laurents)
GYPSY (1959; Jule Styne; Arthur Laurents)
DO I HEAR A WALTZ? (1965; Richard Rodgers; Arthur Laurents)
THE EXCEPTION AND THE RULE (project abandoned 1968; Leonard
Bernstein; John Guare after Brecht) also known under the
working titles THE ROAD TO URGA and A PRAY BY BLECHT
CANDIDE (additional lyrics for 1973 revision; Leonard
Bernstein; Hugh Wheeler after Voltaire)