The Axioms of Descriptive Geometry
http://name.umdl.umich.edu/ABN2643.0001.001
The Concept of Nature
http://www.brocku.ca/MeadProject/Whitehead/Whitehead_1920/White1_pref.html
The Function of Reason
http://www.brocku.ca/MeadProject/Whitehead/Whitehead_1929/1929_00.html
An Introduction to Mathematics
http://name.umdl.umich.edu/aaw5995.0001.001
Modes of Thought
http://www.brocku.ca/MeadProject/Whitehead/Whitehead_1938/1938_toc.html
Principia Mathematica Vol. 1
http://name.umdl.umich.edu/AAT3201.0001.001
Principia Mathematica Vol. 2
http://name.umdl.umich.edu/AAT3201.0002.001
Principia Mathematica Vol. 3.
http://name.umdl.umich.edu/AAT3201.0003.001
Religion in the Making
http://alfrednorthwhitehead.wwwhubs.com/ritm1.htm
Symbolism: It's Meaning and Effects
http://www.brocku.ca/MeadProject/Whitehead/Whitehead_1927/1927_00.html
A Treatise on Universal Algebra, with Applications
http://historical.library.cornell.edu/cgi-bin/cul.math/docviewer?did=01950001&seq=5
"Alfred North Whitehead," Wikipedia
http://en.wikipedia.org/wiki/Alfred_North_Whitehead
Eastman, Timothy. Resource Guide for Physics and Whitehead
http://www.ctr4process.org/publications/ProcessStudies/PSS/2004-6-EastmanT-KeetonH-Resource_Guide_for_Physics_and_Whitehead.pdf
Irvine, A. D. "Whitehead." Stanford Encyclopedia of Philosophy (1996, revised 2003)
http://plato.stanford.edu/entries/whitehead/
Tanaka, Yutaka, Ed. The Contextual Index of Process and Reality
http://pweb.sophia.ac.jp/process/society/context.htm
The Wit and Wisdom of A. N. Whitehead
http://www.alfred.north.whitehead.com/witwiz.htm