By Time Period
- 641
- Leif Ericson Vikingship
- A Philadelphia-based organization dedicated to the promotion of the understanding and study of Viking exploration.
- 642
- Viking Navy
- Designs, builds and sails Viking reproduction ships. Speculates on forgotten designs for all things Viking.
- 645
- Vinland Map and Shroud Updates
- McCrone Research Institute discussion of scientific studies of the validity of these two artifacts.
- 646
- Brookhaven National Laboratory: Scientists Determine Age of New World Map
- Press release concerning a U.S. government lab's finding that the Vinland Map predates Columbus's arrival in North America by almost 60 years. (July 29, 2002)
- 649
- Medieval Art in Pisa
- The Virtual Museum offers a comprehensive view of the historical and artistic heritage of one of the most important cities in medieval Italy.
- 650
- Medieval England - Daily Life in Medieval Towns
- Article by David Ross describing common features of urban life in the Middle Ages.
- 651
- The Rise of Commerce and Towns
- Lecture by Lynn Harry Nelson, The University of Kansas, Lawrence, Kansas.
- 654
- Tiberius Gracchus by Plutarch
- Tiberius Gracchus by Plutarch, part of the Internet Classics Archive.