I found out that the Mamas & Papas are featured in a documentary film and soundtrack about Laurel Canyon and the "California sound" created by them, the Beach Boys, the Bryds and many others. The first single is a cover of "Go Where You Wanna Go" by Jakob Dylan and Jade Castrinos. As you can see from the trailer, Michelle Phillips is interviewed. It looks like a terrific film!
https://www.youtube.com/watch?v=QRVFBQHBUls