You can download extra copies of the assignment and citation rubric here.
These source are useful for building timelines. These sources should be cited as websites.
A Timeline of Mathematics and Theoretical Physics
We have books, too!
Do a keyword search on geometry and then check the index to see if there is information on your person. Don't forget to check the encyclopedia as well. Encylopedias will have useful timeline information. Ms. Franke can help you find books from the public library and will order titles for you.