Check out Henry Diltz (on banjo), Chip Douglas (on bass), and company performing on the music variety show in 1965. That's Monkees session drummer Eddie Hoh on drums.
They are performing "Come On In," a song Peter tackled in 1968 as a member of The Monkees:
Micky Dolenz Live!
Dolenz, Jones, Boyce & Hart returns
50th Anniversary Editions