Interesting story, I've heard this before. Would like to know if they are ever able to do DNA testing (if they find the body that is).
The Mutter Museum in Philadelphia has a piece of Booth, rather than him finding a piece of human jerky, perhaps they could simply run a test on the piece there, or maybe exhume the body from the Booth family plot(or sneek in at night and steal a piece hoping it will have valid DNA). Really the evidence is out there to exclude the story we all know, or prove it is already out there and easy to find just accessing it is a different story.