I remember them all but "The Gunslinger". In fact, I could have sung the theme from "Tombstone Territory" by heart, well before seeing/hearing the song in the clip. It was a big-time favorite of mine back in the day.
I also remember "Yancy Derringer" (it supposedly took place in New Orleans) and "Jim Bowie" with fondness. Didn't care all that much for "Bronco Lane," though my father did.
Thanks for "whistling up the memories", pard!