The Monkees and invited guests attended the Hollywood premiere of Head on November 19, 1968 at the Vogue Theatre.
It just so happens that you can find the group's star on the Hollywood Walk of Fame at 6675 Hollywood Boulevard, right outside of the Vogue. The Karate Kid Part III topped the marquee there on July 10, 1989, the day The Monkees received their star:
Micky, Michael, Davy, and Peter were bestowed the honor by the honorary mayor of Hollywood, Johnny Grant:
Monkees Farewell Tour