I found this online gallery of pictures from Las Vegas in 1955. While these are real life pictures, it does let us see what pre-war Vegas might have been like.
http://life.time.com/loomis-dean/vintage-vegas-rare-photos-of-a-desert-boom-town/?iid=lb-gal-viewagn#1

The site also has pictures from a nuclear test site after a bomb test.
http://life.time.com/history/atomic-testing-photos-life-magazine/?iid=lb-gal-viewagn#1

OH I love that site! Those pics are amazing! After I looked through the Las Vegas photos, I automatically went to the A-Bomb test site pictures and then I saw you linked those, too!

I can't believe they are walking around that test site without any protective gear!!

Thanks for the pictures! It is amazing how far Vegas has come since being that wee little strip back then!