thanks to Jim Episale, I've learned a great deal on posters and such used for theatrical releases.

As it turns out, what I have here is what's called an "Insert" . Here's a link to a great site that Jim turned me on to.

http://www.learnaboutmovieposters.com/NewSite/INDEX/ARTICLES/inserts.asp

To learn all sorts of things about movie posters, here is the main link:

http://www.learnaboutmovieposters.com/NewSite/INDEX/ARTICLES/topical-index.asp#sizes

I also learned about the "59/401" at the bottom . NSS was the poster distributor for the studios, and the 401 is the 401st movie that it distributed posters for the year 1959.

Thanks again Jim, for the great education and very useful information!