Interesting that J.D. Miller's Jamil (BMI) retained copyright on both sides here and Chess didn't get a look in on the publishing. Deals had already been done in Louisiana before Chess even came into the picture. "This Should Go On Forever" had been a "swamp pop" staple for some time before Rod Bernard recorded it. Its writer was Bernard Jolivette, known professionally as King Karl who recorded with Guitar Gable's band for Miller. I imagine Floyd Soileau could see a chance of getting a national hit with the song if recorded by a white artist (Rod Bernard). (King Karl's version was released on Excello after Rod Bernard's version started making waves.) "Pardon Mr. Gordon" is also Jamil, meaning J.D. Miller controlled 100% of publishing royalties when this record became a national hit. I'm not sure, but I think Floyd Soileau created his own publishing firm (Flat Town Music) after this - lessons learnt.
Trivia: Floyd Soileau's other label Swallow is named from the pronunciation of his surname, but then you probably all knew that. :)
The record was released in October 1958 on Floyd Soileau's Jin records and was an almost immediate local success. But Floyd Soileau wasn't big enough to cope with demand. Finally, Leonard Chess made the best offer and his subsidiary Argo started to distribute the disc nationally in feb. 1959.