In 1953, an 18 year-old Elvis first walked into the Memphis Recording Service studios. The songs he recorded for Sam Phillips in the first few hours of that session are not precisely known but the opening track here, 'Harbour Lights' appears to be the earliest recording to have survived. The last song recorded on that first session, 'That's Alright', almost wasn't recorded at all. The story is told in the extensive liner notes by Sam Phillips' son, Knox. There are 19 of the young Elvis' very first recordings collected here.
You really should quote your sources... where'd this text come from?
You should indeed quote some of your sources and you also said, "Probley The Most Important LP in music history,this is where it all started." But as I'm sure you know DeNiro, there are lots and lots of opinions about where 'it' all started.
According to wikipedia, "There is much debate as to what should be considered the first rock & roll record. Sister Rosetta Tharpe was recording shouting, stomping music in the 1930s and 1940s that in some ways contained major elements of mid-1950s rock and roll. She scored hits on the pop charts as far back as 1938 with her gospel songs, such as "This Train" and "Rock Me", and in the 1940s with "Strange Things Happenin Every Day", "Up Above My Head", and "Down By The Riverside." Another artist who was singing hard-rocking blues/gospel to a boogie piano was Big Joe Turner, whose 1939 recording, "Roll 'em Pete," is almost indistinguishable from '50s rock and roll. Other significant records of the 1940s and early 1950s included Roy Brown ("Good Rocking Tonight", 1947), more Big Joe Turner ("Honey, Hush", 1953, and "Shake, Rattle and Roll", 1954), Paul Bascomb ("Rock and Roll", 1947), and Fats Domino ("The Fat Man," 1949). Rolling Stone magazine argued in 2004 that "That's All Right (Mama)" (1954), Elvis Presley's first single for Sun Records in Memphis was the first rock and roll record[1]."
Obviously you are a Rolling Stone reader.
EDIT--(BTW I admire your musical selections very much. )
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