Reader M. J. sent me the link to this video. It looks to date from the 1950's or early 1960's, and provides a comic look at the development of the first ejection seats. It's a bit hokey by today's standards, but it's still a lot of fun for aviation enthusiasts.
I think I met that test pilot (or his near relation) back in South Africa, while working on another aviation project . . . I remember the scowl, and the bad language!