Big Boss & Squaw looks to be one of the more unusual Mordillo puzzles, and it's cute I would like to get my own copy someday!
I got this one from eBay. It's hard to find such copies from early Heye these days.
I notice, too, there are not many early Heye puzzles on eBay. My Easy Rider by Mordillo puzzle is an early one, dating from 1974 and, like many early Heye puzzles, says "Happy Puzzle" on it. The majority of Easy Rider puzzles I have seen on the internet are reissued puzzles from 1981.