Important websites

National Park Service

   Welcome to Carlsbad Caverns National Park!
http://www.nps.gov/cave/
   Petrified Forest National Park
http://www.nps.gov/pefo/
   Grand Canyon National Park
http://www.nps.gov/grca/
   Mount Rushmore
http://www.nps.gov/moru/
   Welcome to Yellowstone National Park!
http://www.nps.gov/yell/

Accommodations

   Brantley Lake State Park
http://www.explorenm.com/camping/BrantleyLake/
   Meteor Crater RV Park
http://www.meteorcrater.com/RV-Park-Overview
   Grand Canyon / Williams KOA
http://koa.com/where/az/03109/
   Welcome to Yellowstone Grizzly RV Park and Cabins
http://www.grizzlyrv.com/
   Horse Thief Campground
http://www.horsethief.com/

Extra sites
Arizona visitor's guide
   Grand Canyon
http://www.arizonaguide.com/things-to-do/grand-canyon

Petrified Forest National Park map page
http://www.petrified.forest.national-park.com/map.htm