Great information there.
Recently I purchased the Special Commorative Edition of the Elvis Encyclopedia (The Complete & Definitive Book of the King of Rock & Roll) written by David E. Stanley (Elvis' Stepbrother) with Frank Coffey.
He seems to have a lot of that sort of information in his book. I am not done reading it yet but have enjoyed parts of it, like the copy of the letter Elvis wrote to President Nixion and much, much more. Really good article on the dear Colonel Parker (he was a rat for sure) Have you read that book? If so, what do you think of it??? Some of it is really eye opening and gives you a feeling of how Elvis got lost in the world being on center stage and so much in demand all of the time.
Best Regards to you Dovey