AEA AGMA SM said: "And according toHarold Prince: A Director's Journeythe original production ofWest Side Storydid recoup, and Prince later felt that he closed the show in New York too early to accommodate the tour (pages 41-42 for those who want the citation)."
Pretty sure he says in Sondheim & Co. that the show didn't recoup. He made a very stupid error, he says, in closing the show when it went out on tour. He said there's a lot of money that was made from West Side, but it all comes from the movie.