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Dozenal Society of America
Promoting base twelve and alternative base mathematics
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The Dozenal Society of America
The DSA is a voluntary, nonprofit education corporation, organized for the conduct of research and education of the public in the use of dozenal (also called duodecimal or base-twelve) in calculations, mathematics, weights and measures, and other branches of pure and applied science.

Practical Polygons

Title: Practical Polygons
Author: Donald Hammond ("Troy")
Year: 1196
Subject: Numbers considered through polygons.
This powerful article discusses numbers in the form of two-dimensional plane figures, explaining how polygons show the nature of number and demonstrate the superiority of twelve as a counting base. Richly illustrated and explained.