In the 1890s, Frank Lenz started a bicycle tour around the world. He never finished, and his ultimate fate remains uncertain, though there are pretty solid clues indicating how he met his end.
- Herlihy, David. “The Lost Cyclist: The Epic Tale of an American Adventurer and His Mysterious Disappearance.” 2010.
- Gambino, Megan. “The Unsolved Case of the Lost Cyclist.” Smithsonian. August 26, 2010. https://www.smithsonianmag.com/history/the-unsolved-case-of-the-lost-cyclist-57021309/
- Koss, Geof. “The Last Ride of Frank Lenz.” Adventure Cyclist. January 2009.