Yep. He was always the greatest. In June, 1963, on assignment from Sports Illustrated, peerless portrait photographer Steve Schapiro traveled to Louisville, Kentucky to spend some time with the young Olympic champion boxer Cassius Clay, and accompany him on a road trip to New York City. At 21, Clay was yet to adopt the mantle of Muhammad Ali, but his boastful persona, intelligence, black pride and sharp tongue were already fully formed.

Over the course of their five days together,  Sports Illustrated–a master at developing trust and capturing unguarded intimacy on film—revealed both sides of the young Ali: The one side posing and preening for the camera, ever conscious of his image; the other, unguarded and unselfconscious, in candid images of the young fighter at home with his family and immersed in his community and neighborhood.

And so we have Ali (powerHouse Books, $50)a luscious book that collects the best of Schapiro’s images of the late fighter; many in print for the very first time. They offer a glimpse of a star on the rise. It is an indelible portrait of the early life of one of the most talented, graceful, controversial, athletic, and influential American figures of the 20th century.