Just a couple comments. Firstly, a correction to Jim Dixon's comment. The version of The Ballad of Sigmund Freud on the Belafonte Returns to Carnegie Hall album was by The Chad MItchell Trio. I don't know if The Kingston Trio ever did it.

And regarding Gotta Travel On. I'd always thought of it as a Paul Clayton song....but according to one writeup where some of the accredited writers were interviewed, Paul Clayton wrote the chorus, and Dave Lazar later wrote the verses.

Interesting.