When did the 3 members of the Mamas and Papas die?

As of October 2023, two of the original members of The Mamas and The Papas have passed away. Cass Elliot died on July 29, 1974, and John Phillips passed away on March 18, 2001. Denny Doherty died on January 19, 2007. Michelle Phillips is the only surviving member of the group.