John Dalton - Detailed Wikipedia entry about this chemist, biologist, astronomer and writer. - http://en.wikipedia.org/wiki/John_Dalton
Dalton - Short biography includes a portrait. - http://www.bioanalytical.com/info/calendar/98/04dalton.htm
Dalton's Law - Offers details information on the scientist's contribution to the field, with a special focus on his law of "Partial Pressures." - http://www.aquaholic.com/gasses/dalton.htm