On April 30, 1908, Harry Houdini walked from a nearby hotel to the Harvard Bridge, where he had himself chained up before he jumped into the still frigid Charles River. From The Amazing Harry Houdini:
"But aren't you even afraid, Mr. Houdini?" one of the reporters shouted to him. "Afraid?" Houdini asked with a loud laugh. "What do I have to fear? I am the King of Handcuffs. Nothing can hold me!"
And, of course, he eventually surfaced - after the assembled throng of some 10,000 began to fear he had drowned. That night, he appeared as scheduled at Keith's Theatre on Washington Street.
The photo is the first in a series of four in the Library of Congress's American Memory collection. The last shows Houdini bobbing at the surface after he unshackled himself.