French tightrope walker Charles Blondin carrying his manager, Harry Colcord, on his back across the Niagara River on a tightrope on August 19, 1859.

Source

[My animations of stereoscopic photos of Blondin’s tightrope walks across the Niagara River.]

[Source.](https://www.flickr.com/photos/thomasfisherlibrary/18121942003/)