Jim Jackson does seem to have the oldest recording of In The Jailhouse Now -- his variant has Campbell and Lotte (J.R. Cash has Campbell also) -- if i recall correctly -- all Rodgers did was to change the names and the games (from pinocle and euchre to dice and poker) a bit -- the other variant is the political version (She's In The Graveyard Now) performed by Clifford Hayes, Earl McDonald et al. -- and the location is New York City and the dodge is paying for votes and voting twice, etc. -- that's the version the Memphis Jug Band performed as In The Jailhouse Now (but never seems to have been covered since) -- my childhood memories of the song (circa 1950) is the Webb Pierce "Ramblin' Bob" version, http://www.youtube.com/watch?v=XILPUjF232M -- i also like the version Leon Russell did on his salute to his roots album "Hank Wilson's Back"