Peter's has to satiate his inner geek and has compiled the numbers:
26 States (if you include DC)
CA OR WA ID MT WY CO UT AZ NM TX OK AR TN NC VA WV OH PA NY VT NH MA NJ DE DC
13 National Parks and numerous State Parks, National Monuments ...etc
Lassen, Glacier, Yellowstone, Tetons, Arches, Canyonlands, Capital Reef, Bryce, Zion, Grand Canyon, Petrified Forest, New River Gorge, Smokies
Numerous Wildlife
Brown Bear, Buffalo, Deer, Long Horn Sheep, Grizzly Bear, Turkey, Tarantula, Elk, Marmot, Condor ..