The official government website for the Mojave National Preserve has a map of the area, but it is available only through a map server which only offer up small pieces of the map at a time; no option is available to download the entire map at once. To remedy this deficiency, I downloaded the entire map in sections, and then stitched the sections into a complete map using GIMP. I'm posting the map here to see if it will show up in web searches.

At some future date, I may post the map to Wikipedia, if I ever find the time. This is a federal government map in the public domain, so you are welcome to upload it to Wikipedia yourself, or otherwise do what you like with it.