Leonardo da Vinci  links

Museo Scienzia, Milan
National Museum of Science and Technology, Milan, Italy.
In English, a comprehensive illustrated list of Leonardo's inventions. http://www.museoscienza.org/english/leonardo/invenzioni.html

Leonardo the Mathematician
School of Mathematics and Statistics, University of St. Andrews, Scotland
http://www-groups.dcs.st-and.ac.uk/~history/Mathematicians/Leonardo.html

The Codex Leicester
American Museum of Natural History, New YorkCity
http://www.amnh.org/exhibitions/codex/index.html

Web Museum, Paris - timeline
http://www.ibiblio.org/wm/paint/auth/vinci/

Life, Art, Inventions, & Drawings of Leonardo
Highlands Ranch, Colorado, USA
A year by year chronology of the life of Leonardo; also, his study of flight.
http://members.tripod.com/~mr_sedivy/davinci1.html