Well, let´s see what we can do with dating those pics of yours.
# 1, 3, 4, 36 are from April 14, 1956 in Nashville. This is the session where Elvis recorded "I Want You, I Need You, I Love You" and used to be known as April 11, 1956 until I found the correct date by intense research for my book "The Atomic Powered Singer" After I put out my book the recording date was changed to the 14th of April.
# 2, 5, 6, 7, July 2, 1956 New York
# 8 Jailhouse Rock session
# 9 Jailhouse Rock session
# 10-13 Loving You session
# 14, 15, 33-35 Love Me Tender session, probably Radio Recorders studio
# 16-22, King Creole session
# 23-32 Love Me Tender session, probably stage 1 studio at Fox.
That´s about the best I can do.