Though it's been available online for a while, a promoter friend, Dick LaPalm, recently tipped me off about an interactive version of the photo, "A Great Day in Harlem."
In '94, some ingenious souls made the famous 1958 photograph a clickable biographical map of jazz history. Since then, it's been given a sleek overhaul with more complete biographies. Very, very cool.
This was picture Art Kane's first assignment as a professional photographer. More great photos are available at the Art Kane Archive.