I was digging around the interwebs and stumbled across the Prelinger Archives: https://archive.org/details/prelinger?tab=about

Some of them are home movies, with parts that include Las Vegas.

This is an interesting one including strip and downtown neon and the Sahara pool. Appears to be from the 1950s, pretty high quality with speculation that it was taken with a 16 mm camera.

https://archive.org/details/010112-001?start=636

Enjoy!