G Spencer Brown Resources
- A life chronology, quotations, including links on the web, articles on his four-colour map theory.
- http://www.robotwisdom.com/jorn/gsb.html

Laws of Form
- Accounts of the work, a description of the principal ideas within it, other interpretations and related works by others.
- http://www.lawsofform.org/

Laws of Form - 1963 Lecture Series
- Notes taken by a student, from a series of lectures given by Brown in 1963. Scanned .jpg image files.
- http://www.tooke-picarel.co.uk/LoF/index.htm

Demonstration and Proof
- Page that includes a discourse presented by Brown in 1973, on the distinction between a demonstration and a proof.
- http://www.csus.edu/indiv/v/vonmeierk/4-03EXCU.html

George Spencer Brown and his Laws of Form
- Includes an account of his principal work and detailed online references, compiled by Randall Whittaker.
- http://www.enolagaia.com/GSB.html