On Muhammad Ali's 70th birthday, an opportunity to publish a couple more Karsh photos from their session in 1970.

And because a Karsh story is always worth repeating:

"Muhammad Ali arrived at my New York studio with a breathless young editor trailing behind. They had jogged together from the 'Look' offices, the young editor carrying Ali's heavy portable telephone which Ali said kept him in "constant contact with the world." Since the editor was a slight young man, I smiled to myself as I imagined this improbable duo and the incredulous stares of the passers-by as they made their way up Madison Avenue."