Conversation so far:
What happened in 1967 for the The Mamas & the Papas?
By June 1967, the strain on the group was apparent when it performed indifferently at the Monterey International Pop Festival
What was the issue for The Mamas & the Papas at the Monterey International Pop Festival in 1967?
The band was under-rehearsed
Did The Mamas and the Papas start to practice more together after  their under-reheared performance at the Monterey International Pop Festival in 1967?
The Mamas and the Papas rallied for its performance at the Hollywood Bowl in August, which John and Michelle Phillips remembered as the apex of the band's career.
Did The Mamas and the Papas still go on tour in 1967?
What was The Mamas & the Papas Deliver?
Deliver is the third studio album by the American folk rock vocal group The Mamas & the Papas, released in 1967
Did the album The Mamas and the Papas Deliver do well?
It charted at #2 in Billboard's Top Pop albums for 1967.

Question: Anything thing else interesting about this time period?
Self-contained rewrite: Anything thing else interesting about the time period 1967 for the The Mamas & the Papas besides Monterey International Pop Festival, Hollywood Bowl, and Deliver?