DezB, that version of the song doesn’t come close to being the original version, that’s the Stone Poneys version recorded in 1967:
[video]https://youtu.be/TGZznJXY1Xc[/video]
Mike Nesmith, the one wearing the woolly hat in The Monkees, was already an established songwriter, and the TV network bought the rights to his songs so they could be used in the TV series.
It was some time before he covered his own song, I can’t track down a date for it as I’m not sure which of his albums it was on, as he also recorded with the First National Band.
The young lady singing is the truly wonderful Linda Ronstadt, posessed of a fabulous voice, and who was the girlfriend for a time of another superb songwriter, John David Souther, co-writer of a number of the Eagles greatest hits.
Who is also a real gentleman in person.