The Rock and Roll Hall of Fame's Website offers bios, stories, and access to their archives.
The Smithsonian is compiling a full access image collection for Rock & Roll. Images can be submitted and shared.
The offical site of Alan Freed, the man who coined the term "Rock & Roll", has recordings and archival entries.
Explore the Library of Congress' The Library of Congress Celebrates the Songs of America Collection. It has it's very own entry on Rock & Roll
Click on the links to access full-text, scholarly searchable journals of American music.