Thomas recorded for Chess in the late sixties, and made this recording at Fame Recording Studios in Muscle Shoals in 1967, but the album was not released until 1984 (in Japan). It’s very hard to find in the Japanese vinyl, though it was reissued on CD in 1991.
There are no credits for musicians, though it’s likely this was the Muscle Shoals Rhythm Section in its second incarnation aka The Swampers.
My copy is the Vinyl Me Please exclusive reissue from 2021 on blue vinyl.