I've never taken a vacation to specifically look at ghost towns, but I ran across a lot of them when I used to work in Nevada. Some ghost town resources:
list of ghost towns with pictures (lets you know what you'll find when you get there.)
Clickable NV map with links to ghost towns and picturesLink to website with interesting historical tidbits and picturesA lot of these ghost towns are way off the beaten path. There are some NFS and BLM CG's that are free and you often have the whole place to yourself. Otherwise, so much of the state is public lands, boondocking is everywhere. But you may find it easier to camp someplace easy to get to and take your 4x4 to the camps.
