This article is from the Aviation FAQ, by Geoffrey G. Peck firstname.lastname@example.org with numerous contributions by others.
I'm having trouble getting a medical. Who should I call?
Does someone have sample aircraft partnership agreement?
Where can I get the bluebook value of a particular aircraft?
These questions, and many others, can be simply and correctly answered
for U.S. readers by the Aircraft Owners and Pilots Association,
AOPA. Call 1-800-USA-AOPA. You can speak to a number of different
specialists, who will gladly answer your questions whether or not
you are a member. Of course, you can and should also join AOPA --
it's $35/year, and you can do so on the same toll-free number.
So, gentle reader, rather than asking these questions on the net and
getting a mixed bag of answers, please call AOPA and then report to
the net with your question -- and their answer!