http://www.aboutbillythekid.com/fact_vs_myth.htm
Myth: There were wanted posters on Billy the Kid.
Fact: There were never any “Wanted” posters on Billy the Kid. The closest thing to a wanted poster was a reward notice the governor put in the Las Vegas Gazette in December of 1880. Which read:
So the poster which some of you may have seen which describes Billy the Kid as being 5' 3'' 120lbs with a posted reward for $5,000 dollars to be delivered to Sheriff James Dalton, is not only inaccurate, but never existed. There is also a funeral notice poster which is also a fake. Both are nothing more than souvenirs.
BILLY THE KID
$500 Reward
I will pay $500 reward to any person or persons
who will capture William Bonny, alias The Kid, and
deliver him to any sheriff of New Mexico.
Satisfactory proofs of identity will be required.
(No that's not a typo error, Bonney was indeed spelled incorrectly)