Math History I -
maintained by David E. Joyce of Clark University;
includes timelines and a chronological list of mathematicians;
many other Web resources
Math History II -
Mathematical MacTutor archive; more than 1000
short biographies of famous mathematicians (some with pictures);
also includes a birthplace map
Math History III -
maintained by David Wilkins of Trinity College,
Dublin; includes excerpts from W. W. Rouse Ball's
A Short Account of the History of Mathematics
My friend and colleague,
V. Frederick Rickey,
is math-historian in (occasional) residence here at
BGSU; his home page
will lead you to many more sources, including the
HPM Newsletter.