I just found a site with a lot of Denver, Boise and Johnson stuff, and one of the recordings caught my attention. It's John Denver singing the Merle Haggard song, "Okie from Muskogee" back in 1971. As far as I know, John never recorded the song on any of his albums.

What's more interesting is that John actually sang a parodied version of the song. He began with the original verses, but the last two verses he sang are:

Now, everytime I see those hippie peace freaks,
It really makes me feel like I'm a man.
If I had my way I'd join the Ku-Klux
And I'd burn them with their draft cards in their hands.

I'm proud to be an Okie from Muskogee;
I'm proud to be a redneck from the South.
Everywhere those Wallace voters know me -
"Love me, or I'll punch you in the mouth!"

OK, I know John Denver is an Okie and sorta leftie, but I don't think he could write ironic parody like that. So who was it that wrote those verses? It's indeed very witty! Could it be Tom Paxton? Denver once said he would turn to Paxton every time he wanted some satirical stuffs.

Any idea?