Thanks Branson, for pointing that one out. I had noticed that Delta ad, there was a lot of good stuff around in 1951. I frittered away at least 45 minutes reading those ads.
Papaw has shown a very handy trick there.
For those that have never tried it, type your topic into google, be it Delta or Meteor or whatever, but include the terms Popular Mechanics and you'll get those good ol' back pages full of ads. Often that will be the only evidence that something like the Meteor Wrench was ever heard of (besides the one you have in your hand). It's also a good way to figure out when something first showed up on the scene. For example, I wanted to find the vintage of a Stanley Workmaster ratchet I had gotten. I did the above trick and, there it was, a little article in popular mechanics in 1984 about Stanley's introduction of the Workmaster with the 'flip' selector.