Drone Pilot Field Kit
This "kit" is an important & helpful "tool" for any serious drone pilot as it contains documents best suited for handling questions & concerns raised by others not familiar with drone legalities. You should keep a copy of this on you at all times...
US Drone Laws by State
If you are in the United States and are unsure of the laws for each State then this is where you need to look. Know the variance in laws from State to State before you assume they are similar. You know what assuming does...don't be that person.