I recently had the chance to pass through Vegas McCarran airport and they have a nice display of Vegas airport history and related models in the Air Canada departure terminal.
At least it was there when I was there .. unless they moved it.
Highlights for me were the Verkuyl Fokker 28 in Bonanza livery (a 1/72 metal model) and the two National 727 models. You can see the pics and my full report here: http://www.henrytenby.com/neat-little-vegas-aviation-history-display-at-mccarran-airport/.