...I always request the parents send a copy of their birth certificate and a notarized letter that allows me to travel "to any place, at any time, by any means" and to "make any and all emergency medical decisions". I just have it incorporated into the same letter. Actually we do this so often, I have a form letter composed on the computer for just this purpose. That being said, I have the same letter from both of my kids' fathers. It might be overkill but I'd rather be safe than sorry...