I had heard that the Kingston Trio had regularly used a baritone ukulele. This video shows a 4 string instrument but is it a tenor guitar or a bari-uke? I am leaning towards a TG. Is there anyone that knows any better? The second video shows the instrument on the album cover early in the video.
So, it's settled as a Tenor Guitar. Thanks to Larry, who left a comment with a terrific link for us... http://www.kingstontrio.com/pdfs/nick_reynolds_guitar.pdf