Richard Palais' Home Page
Science, Math, Geometry, People - Palais, Richard. Differential geometry, mathematical visualisation.
http://rsp.math.brandeis.edu/
People
The Visual Elements of Euclid
Science, Math, Geometry, People - The Visual Elements of Euclid. New edition of the text of Heath, transformed into an extensively illustrated edition.
http://www.visual-euclid.org/