Whether you just want to see the major attractions of the areas we've visited or you want to get off of the beaten path, I highly recommend these readings. Whether they are the maps of Yellowstone or the Hawaii Revealed series you will not go wrong by reviewing these manuscripts:

Hawaii

Although these books are not informational in content I absolutely love the photos and recommend that if you enjoy the beauty of the Islands you at least give these books a look.

Yellowstone /Grand Teton National Parks