I'm going to go with the experts on this one; maybe of whom have spent lifetimes studying Billy the Kid and old west photographs. Simply put, Guijarro's "proof" simply doesn't hold up. After everything else has been debunked; all they are left with is the analysis of "facial recognition expert" Kent Gibson; but keep in mind this is the same Kent Gibson who identified two Japanese people as Amelia Earhart and her navigator Fred Noonan in a photo that was quickly debunked.I also read that but you have to keep in mind that there is a hardcore element that insist there was only ever one photo of Billy, they have since been proven wrong. Remember that the chap (Randy Guijarro) who found the croquet photo was pushed from pillar to post trying to prove that his picture was genuine, he was basically laughed out of the Witherell’s Old West Show because the experts said the photo lacked provenance. It took Mr Guijarro to head out to Lincoln County and find the area where the photo was taken just to get some kind of evidence to prove that it was indeed Billy and the Regulators, after four years of research he was able to prove that his tintype was indeed taken on the Tunstall ranch (evidence enough)
Even now there are so called experts that deny the authenticity of the croquet photo, I sometimes wonder if it has something to do with preserving the myth of Billy the Kid, if there are other photos out there then people will obviously learn something new about Billy, who would ever have thought of Billy being dressed in fine clothes whilst playing croquet, also, every time someone provides something new about Billy then it challenges long held beliefs and people have to rethink what they know and that includes those that consider themselves to be 'experts'. Its not a bad thing that the experts insist on solid evidence but sometimes it gets ridiculous, if facial recognition software and matching handwriting samples isn't enough then I don't know what is.