I heard it on CBS EZ Cue Library vinyl LP #124. I googled the cue name/composer and found the Gunsmoke reference on Bill Wrobel's Film Score Rundowns site.
That really is a beaut. He was so versatile. It's also got me thinking of the music underscoring the villain-kidnapping-maiden scene in his Miniature for Twilight Zone. Something of a rhythmic/aesthetic association, albeit a loose association.
PS it's at the 31:00 mark (fun to see/hear with lead-in 15-20 seconds earlier):
