Except for Masters and Alternate Masters - all
original 3-Track tapes are lost.
"Celluloid Rock Volume 2" (Cool Romeo)
has a binaural mix used for the Masters.
There is no information for production numbers 2015 and 2016, but they could be for instrumental work done on the new track for City By Night.
Production numbers 2020 and 2021 are for instrumentals used in the movie.
It is unknown when Elvis recorded his vocal overdub to Track 2001-03 (Slowed Down)/2017-03.
In March of 2007, Sony decided to go through all of Elvis' masters. They retransferred everything and remastered all tracks including repairing as many clicks, pops, bad edits and dropouts as they could. They have used these newly mastered recordings on their new releases since 2007 including budget soundtracks, 'Legacy' releases, the 30 disc 'Complete Elvis Presley Masters' collection and the Franklin Mint package.
Thanks to Erik Rasmussen and Kevan Budd for information on the missing production numbers and overdubs for City By Night.