He was recorded in Detroit, Mi, Feb 1975 and released on JSP LP 1079 which also included songs from Johnny Shines.
Terraplane blues
Dead shrimp blues
Steady rollin? man
Me & the Devil
Mean hearted woman
Ramblin? blues
Hobo blues
Milk cow blues
Mistreated so long
Sail on little woman
Hoodoo man
Three further songs later appeared on a JSP "sampler" (LP 1068 Downhome Blues)
In later years these found their way on to CD.
A letter in Living Blues 33 (1977) reported Will Dukes as having been recorded at least twice in the 1970s with Dukes apparently recorded by Bowling Green State University prior to the above session.
[Later, after some excavating]
The LP was released in October 1984 and the two reviews I've found report that Dukes claimed he learnt these direct fromRJ - which, not surprisingly, is greeted with scepticism ("How much did he learn from Johnson directly, and how much from the records". "Did he have the role forced upon him at the time of the recording" etc). The reviews don't say who made the recording, but at a guess I'd take a stab at George Paulus.