Below are some web links relating to the history of mathematics.

http://www.dcs.warwick.ac.uk/bshm/resources.html

http://archives.math.utk.edu/topics/history.html

http://mathforum.org/library/topics/history

http://www.maths.tcd.ie/pub/HistMath/Links

http://www-groups.dcs.st-andrews.ac.uk/~history/

http://aleph0.clarku.edu/~djoyce/java/elements/elements.html

http://vax.wcsu.edu/~sandifer/eulerproject.htm