For those interested in this kind of stuff, I stumbled upon a mistake in the 2012 edition of the "A Boy From Tupelo" book (FTD).
Page 214 displays a photo of Elvis and fan, and it's captioned as being from Baton Rouge, Louisiana - Monday, May 2, 1955.
In fact that photo was taken in St. Petersburg, Florida - Tuesday, August 7, 1956.
The image does not appear on the abridged version of the book :