For anyone who likes to travel with their pistol or rifle, I'd recommend picking up this book. I keep mine in my car. The "Traveler's Guide to the Firearm Laws of the Fifty States" is written by an attorney, that studies the firearms laws, and rates each state by their firearms "friendliness".

Each state has its own page where it is rated, and the carry laws are explained in simple English. It also lists states with concealed carry reciprocity agreements, and lets you know if you should carry in the glove box, on the seat, or locked in a case. While it isn't legal advice, it is an invaluable resource for anyone who travels with their firearm.

At $12.95, it doesn't put too much of a dent in your pocketbook either.