A special event occurred on June 28, 1989 when all four Monkees were guests on The Mark & Brian Show on KLOS-FM in Los Angeles, California. The quartet sang "Papa Gene's Blues" and "Daydream Believer" live on the air with Peter playing acoustic guitar. Michael was present to hype his concert appearance with Micky, Davy, and Peter at the Universal Amphitheatre on July 9, an event that would coincide with The Monkees receiving a star on the Hollywood Walk of Fame the next day.
Here's a photo from the KLOS appearance that I have never seen before, courtesy of the Live Almanac's friends at Written In Our Hearts on Facebook:
Monkees Farewell Tour