From KCLV TV, a couple of great videos on the history of Las Vegas...with Mark Hall-Patton, Bob Stoldal, Michael Green and others. I haven't watched the 1930's video yet (at least not recently), but the 1940's one is great!

the 1930's

https://www.youtube.com/watch?v=YZEl3fhUzzM

the 1940's

https://www.youtube.com/watch?v=W7edD3d0ATw

They used our photo in the video! Though they got it from a site that got it from a site that got it from me...so their version is a little grainy.