A classic photograph of Muhammad Ali, this image was captured in the twelve days leading up to his match against the fearsome, hard-hitting heavyweight Earnie Shavers at Madison Square Garden in 1977.  Some years later, Brennan showed the picture to Ali who traced his right index finger over the sweat beads in the photograph and mumbled, "All them years, all them years of hard work."

Muhammad Ali is photographed with rival boxer Joe Frazier after a 1974 press conference at the Wig Pen restaurant in Manhattan where they announced their upcoming fight at Madison Square Garden. Ali is shown pointing to the side-view mirror of Frazier's car as he tells him to "take a look and see how ugly he is" in one of his creative insults. 

Freddie Mercury of Queen is photographed at the band's Madison Square Garden debut in New York on February 5, 1977. Inspired by his love of ballet, Mercury wore a full-body white leotard and matching ballet shoes, a silhouette that would become popular throughout his performances. 

A shirtless Mick Jagger is photographed dancing on stage with The Rolling Stones at a concert in Baton Rouge, Louisiana. The performance was the start of the band's Tour of The Americas '75 and was the only time on the tour The Stones performed two concerts on the same day. 

A group of wary police officers is photographed trying to restrain Mike Tyson after the boxer bit off part of rival Evander Holyfield’s ear during a boxing match at the MGM Grand Hotel in Las Vegas, Nevada. The legendary match, which took place on June 28, 1997, would see Tyson disqualified and lose his boxing license for his inappropriate behavior. This photograph was used on the cover of papers the next day.

Jimmy Page, the lead guitarist of Led Zeppelin, is photographed performing on stage at Olympia Stadium in Detroit on January 31, 1975. Attendees recall the crowd that night as one filled with palpable electricity, with those who didn't have tickets breaking through a glass door at the stadium's side entrance to get a chance to see Zeppelin in all their rock and roll glory. 

American singer-songwriter Debbie Harry, best known as the lead singer of the new wave band Blondie, poses for a photo at the studio on East 45th in Manhattan on February 5, 1977. Dressed in a sheer top, leather pants, and a studded belt that she draped around her neck, Harry helped define punk and alternative style as we know it today. 

Muhammad Ali is photographed practicing his form in the mirror at his training camp in Deer Lake, Pennsylvania in 1977. Nicknamed "The Greatest", Ali is widely regarded as one of the most significant and celebrated sports figures of the 20th century and is frequently ranked as the greatest heavyweight boxer of all time.

They Must Fall: Muhammad Ali and the Men He Fought features powerful and often moving images and stories of Muhammad Ali and the men he challenged in the ring, by award-winning photographer Michael Brennan. Brennan spent decades locating Ali’s former opponents to discover what had become of them. Alongside the photos and stories of fighters such as George Foreman, Joe Frazier, Buster Mathis, Leon Spinks, and ‘Sweet Jimmy’ Robinson, this unique book is also a look through Brennan’s remarkable Ali archive, including time spent with great fighters at the Deer Lake training camp, press conferences and in the ring. This special edition, limited to only 50 copies, contains numerous never-before-seen photos plus poignant stories illuminating the images and contextualizing Ali’s powerful role in the world of sport.

Muhammad Ali is photographed resting on the ropes of the boxing ring at his training camp in Deer Lake, Pennsylvania in 1977. Nicknamed "The Greatest", Ali is widely regarded as one of the most significant and celebrated sports figures of the 20th century and is frequently ranked as the greatest heavyweight boxer of all time.

A sweat-drenched Muhammad Ali is photographed wrapping his hands at his training camp in Deer Lake, Pennsylvania in 1977. Nicknamed "The Greatest", Ali is widely regarded as one of the most significant and celebrated sports figures of the 20th century and is frequently ranked as the greatest heavyweight boxer of all time.

John Lennon is photographed at producer Lou Adler's home in Beverly Hills, California in November of 1973. This image was taken during the promotion of his latest album, Mind Games.

Jimmy Page, the lead guitarist of British rock band Led Zeppelin, is photographed holding a bottle of Jack Daniel's backstage at the Olympia stadium in Detroit on January 31, 1975. A mostly self-taught guitarist, Page was a member of the Yardbirds before he founded Zeppelin with bandmate Robert Plant in 1968.

Rod Stewart is photographed sailing in New York Harbor on August 21, 1975. The British musician's distinctive raspy voice earned him success in several bands such Jeff Beck Group and Faces as and also as a solo act.

Mike Tyson is photographed with his tumbler pigeon at a studio in Catskill, New York on November 28, 1985. The American former heavyweight boxer nicknamed "Iron Mike" and "Kid Dynamite" is notorious for having bit off rival Evan Holyfielder's ear during a 1997 match.

John Lennon is photographed drinking tea at producer Lou Adler's home in Beverly Hills, California in November of 1973. This image was taken during the promotion of his latest album, Mind Games.

John Lennon is photographed playing piano at producer Lou Adler's home in Beverly Hills, California in November of 1973. This image was taken during the promotion of his latest album, Mind Games.

John Lennon is photographed reading by the pool producer Lou Adler's home in Beverly Hills, California in November of 1973. This image was taken during the promotion of his latest album, Mind Games.

Led Zeppelin members Robert Plant, John Paul Jones and Jimmy Page are photographed aboard their Boeing 707 plane known as the "Starship" on their way to Detroit on January 31, 1975. The English rock band had a major influence on the evolution of the music industry and helped pioneer the genres of  hard rock and heavy metal. 

Jimmy Young is photographed with his son, Jason, at the top of the Philadelphia Museum of Art steps, where the scene in Rocky took place, on February 6, 1991. The legendary boxer found success in the mid-70s and is widely known for his loss against Muhammad Ali on March 30th, 1976.

Muhammad Ali is photographed in the ring at his training camp in Deer Lake, Pennsylvania in 1977. Nicknamed "The Greatest", Ali is widely regarded as one of the most significant and celebrated sports figures of the 20th century and is frequently ranked as the greatest heavyweight boxer of all time.

Muhammad Ali is photographed shadowboxing at his training camp in Deer Lake, Pennsylvania in 1977. Nicknamed "The Greatest", Ali is widely regarded as one of the most significant and celebrated sports figures of the 20th century and is frequently ranked as the greatest heavyweight boxer of all time.

Muhammad is photographed taping his hands during a practice session at his training camp in Deer Lake, Pennsylvania in 1977. Nicknamed "The Greatest", Ali is widely regarded as one of the most significant and celebrated sports figures of the 20th century and is frequently ranked as the greatest heavyweight boxer of all time.

Muhammad is photographed in an Everlast sparring helmet during a practice session at his training camp in Deer Lake, Pennsylvania in 1977. Nicknamed "The Greatest", Ali is widely regarded as one of the most significant and celebrated sports figures of the 20th century and is frequently ranked as the greatest heavyweight boxer of all time.