Gary Bradshaw's "To Fly is Everything"
— best web site on the Wright Brothers for images & movies
— valuable source of text information on Cayley, Chanute & general aeronautics.
http://invention.psychology.msstate.edu/air_main.shtml

Hargrave Australian Aviation History site
—comprehensive anthology of aviation pioneers, detailed text and many images
http://www.ctie.monash.edu.au/hargrave/pioneers.html

Discovery Channel's very realistic recreations of the Wright's first flights
http://media.dsc.discovery.com

Other general links-

virtual microscope

newcomen engine

fuel cells

hypnosis