There are a couple of references to Jimmie Rodgers' 1928 version of "In the Jailhouse Now."

Rodgers was a great artist, but he goes to show you that copyrighting folk material is nothing new. Neither is white artists getting rich on songs they learned from African Americans.

"In the Jailhouse Now" was already a well known song in before that. Blind Blake's 1927 recording was a juke box favorite before Rodgers' recorded it. And I think the version by the Memphis Jug Band may also have been recorded before Rodgers'.