How to Solve It (1945)

The Tug Bibliography Archive

Linux/Unix Nbench

Graph Theory and Linear Algebra

tex.web – Version 3.141592653

A Summary of Fortran [pdf] (1992)

Coxeter on quaternions and reflections

How to write Mathematics (1970)

hoc — (high-order calculator) [interactive floating-point language]

What Optical Illusions Tell Us About The Visual Cortex (2002) [pdf]