Charles Clyde Ebbets

11 men casually eating, chatting and sneaking a smoke as if they weren’t 840 feet above Manhattan with nothing but a thin beam keeping them aloft. That comfort is real; the men are among the construction workers who helped build Rockefeller Center. But the picture, taken on the 69th floor of the flagship RCA Building (now the GE Building), was staged as part of a promotional campaign for the massive skyscraper complex. I selected this photo because it creates suspense.

Neil Leifer

23-year-old heavyweight boxing champion Muhammad Ali squared off against 34-year-old Sonny Liston, the man he’d snatched the title from the previous year. One minute and 44 seconds into the first round, Ali’s right fist connected with Liston’s chin and Liston went down. Leifer snapped the photo of the champ towering over his vanquished opponent and taunting him. I like this photo because I like the way it looks.