Which playwright, who won the 1969 Nobel Prize in Literature, kept audiences waiting for someone who never arrives?

In which 1969 film does a character complain, "The next time I say let's go someplace like Bolivia, let's go someplace… "Raindrops Keep Fallin' on My Head" won an Oscar as a song from which 1969 film? Which famous 1969 rock festival was held on a dairy farm in Bethel, New York? Complete the title of Sam Peckinpah's 1969 western: "The ___ Bunch". In January 1969 which quarterback guaranteed his underdog team would beat the Baltimore Colts in the Super Bowl? In which 1969 film does Wyatt tell his biker partner "You know, Billy, we blew it"? "The Promise" and "The Gift of Asher Lev" are sequels to earlier novels by which writer? "I Think I Love You" was a 1970 No. 1 hit for which TV family group?