As I was looking through Gunsmoke Western the last time, only one Jack Oleck backup story jumped out at me, but as I was going through Wyatt Earp I did notice his style on the Gunsmoke Kid story, and a closer look at the others showed he'd written all four. These tiers from the origin in WE 25 give us captions with the typical Oleck narration reflecting as much as reporting on past events.
Although Oleck left Atlas as of the Implosion, Davis would return a few times; as it happens, the cover to Gunsmoke Western 54 is a new Kid Colt/Wyatt Earp one by him.
Written by Jack Oleck, art by Jack Davis
in Gunsmoke Western
|Sep/59||54||When Gunslingers Meet|
in Wyatt Earp
|Oct/59||25||[Origin of the Gunsmoke Kid]|
in Kid Colt