G Spencer Brown Resources
A life chronology, quotations, including links on the web, articles on his four-colour map theory.

George Spencer Brown and his Laws of Form
Includes an account of his principal work and detailed online references, compiled by Randall Whittaker.

Laws of Form
Accounts of the work, a description of the principal ideas within it, other interpretations and related works by others.

Demonstration and Proof
Page that includes a discourse presented by Brown in 1973, on the distinction between a demonstration and a proof.

To Dissect a Mockingbird
"A Graphical Notation for the Lambda Calculus with Animated Reduction." - David Keenan, 1996, on the use of a notation inspired by Laws of Form.