It struck me recently that very few writing teams from pre-1980 are still with us. There are lotsof shows with 2/3 of the authors still alive (Sondheim & Weidman, Charles Strouse & Lee Adams, etc). But what's the oldest Broadway show with ALL of its authors still living?
ALW & Tim Rice made their Broadway debut in 1971 with Jesus Christ Superstar (and I think Evita 1980 is the earliest Best Musical winner with both authors still with us, plus the bonus of Hal Prince). What about other shows from the 60s/70s and earlier? At first I thought Pacific Overtures, but Hugh Wheeler co-wrote the book so that's out.
(I know this all sounds a little morbid/depressing, but it's interesting when looking back at the history of Broadway)