the science of numbers and their operations, interrelations, combinations, generalizations, and abstractions and of space configurations and their structure, measurement, transformations, and generalizations.

- MacTutor History of Mathematics Archive
Collection of information on mathematics history.
- Mathematics History Topics Index
Not sure which topic to choose? This is a great website to explore the various possibilities.
- Chronological List of Mathematicians
List of mathematicians, organized by date.
- History of Mathematics - Atlas
Very comprehensive look at the history of mathematics. In the Subfield section, copy the MSC subject term (i.e. 01A27 for Japan history) to use in MathSciNet.
- Websites Relevant to the History of Mathematics
Extensive listings of various mathematics and history websites.
- Mathematics Geneology Project
Hierarchy connecting and listing all individuals who have received a doctorate in mathematics.
- Women in Mathematics
An extensive collection of resources about women in mathematics.
- Mathematical Words: Origins and Sources
History of mathematical words and symbols.