Before we left Oregon we picked up AAA map of Las Vegas, the Vicinity Series. It was quite good for us, cause we planned to do some touring. It had a strip map and a Las Vegas area map from Red Rock Canyon to Lake Mead showing the major driving routes in city. It also had a Southwest National Park driving tour map which included Death Valley, Bryce, Zion and Grand Canyon, plus detailed maps of Zion, Bryce and Grand Canyon.. I wore ours out.
W did have to get some more maps of strip.
Also found another good map at info center in Boulder City. It covered from Valley of Fire, to Hoover Dam to Red Rock Canyon to Mt Charleston.