David - If I'm not mistaken - they were the first -
I'll have to look up Scott McKensie - I don't know who he is.
The song was a hit, around for a long time.
Whenever I saw it or heard it, he was singing it.
He must have been on American Bandstand with it,
maybe Ed Sullivan.
When I was in the hospital with sequelae of abdominal surgery
in 2005, I used to watch the Momas & the Pappas a lot.