Webster shot many famous album cover images of the 1960s and early 1970s.
The group's persuasive folk-rock sound was first heard on record on their self-titled debut album of January 1967.
Freeman had his own hit with the song at 18 and saw it covered by everyone from the Beach Boys to John Lennon.
Their creative intensity in little more than two initial years of success makes uDiscover's The Mamas and the Papas In 20 Songs an unmissable listen.
A look into the many versions of the song written and first recorded by Bobby Freeman.
The track evoked the Summer of Love of a few months earlier and made lyrical reference to The Beatles.
Still known at this time by the name she came to dislike, Mama Cass, she released her debut solo album in October 1968.
The song didn't make the UK top 20 until it was covered, 24 years after the Mamas and the Papas original, by Liverpool group River City People.
Worldwide changes during the Summer Of Love hit an interesting funnel in New York City in what had been a traditional centre for artists in the jazz, rhythm’n’blues and early rock’n’roll communities.
50 years ago, The Beatles released ‘Sgt Pepper’ and spring became the Summer Of Love uDiscover presents a gallery of images that tell the story.
The quartet were missing the warmth of Los Angeles, but making their UK chart debut.
Capitol’s US release of The Beatles’ Second Album, their follow-up to Meet The Beatles in that market, hit record stores there on 10 April 1964.
The solo career of Mama Cass Elliot had several under-appreciated songs, including 'Move In A Little Closer, Baby,' which hit the Hot 100 on 15 March 1969.
Reacquaintance with their music is always a delight, and if argument rages over the 10 greatest Mamas And Papas songs of all time, so much the better.