Leave it to Iggy to remind us. Dylan with albums: The Impressions Robert Johnson Lotte Lenya The Folk Blues of Eric Von Schmidt
This is the one I was thinking of. It's included in the front pages of 1001 Albums You Must Hear Before You Die. Ironically, there are no comedy albums in the list of 1001.
I guess the REAL lesson here is that most musicians were very careful that no photographers be nearby when they're holding 8-tracks or cassettes.