Saturday Leftover Day.
Fellos Yahoo groupie Norris Burroughs asked if he remembered right that he had seen Al Williamson's work in Dell's Gunsmoke series when he was much much younger. I had a look nd found that indeed the great EC and Agent X9 artist did do a series of fillers for that title from #8 to #12. The third one was inked by Reed Crandell and by #13 the feture was taken over by Marvin Stein. Here is what I could find. Happy memories, Norris.
From #9:
From #10:
From #12:
From #13: