This guide directs to information on Thomas Jefferson's experience with mathematics, as well as the attempt to legally create a system of universal measurement while Jefferson served as Secretary of State. 

1. Thomas Jefferson Portal

- When viewing an individual title, please click "View Description" to see more.

• Jefferson and mathematics
• Jefferson’s knowledge of mathematics
• Jefferson and measurement

2. Thomas Jefferson Encyclopedia

• Protractor
• Folding Rule
• Drawing instruments with mahogany case

3. Founders Online

• Mathematics (correspondence written by Thomas Jefferson)

4. Thomas Jefferson’s Libraries Project

• Geometry
• Mathematics
• Mathematical Philosophy