Science and Technology

The Fourth Part of the World

Toby Lester

About the Program

Up until the early 1500's, Europeans thought of the world as having three parts: Europe, Africa, and Asia.  Early world maps consisted of these three parts, but sometimes mentioned a  "Fourth part of the world."   This fourth part became a reality on a printed map for the first time when in 1507 German mapmakers Martin Waldseemuller and Matthias Ringmann published their "universalis cosmagraphia." Their work marks the first time the word America appeared on a map; as a tribute to Amerigo Vespucci who was probably the first explorer to realize that North and South America were not part of Asia.  In his talk Toby Lester traces the history of maps of the world, showing how an accumulation of knowledge and techniques led to the Waldseemuller map.  The Library of Congress acquired the only known copy of the map in 2001 for ten million dollars.

About the Authors

Toby Lester

Toby Lester is a contributing editor for The Atlantic.  He has also appeared on public radio's "This American Life."  To learn more about the author and this book: http://promo.simonandschuster.com/fourthpartworld/

Program Information

The Fourth Part of the World

Watch This Program
Watch This Program

Purchase This Program

Past Airings

  • Sunday, February 7th at 5am (ET)
  • Saturday, January 2nd at 7am (ET)
  • Friday, January 1st at 7pm (ET)
American History TV on C-SPAN3