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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.

Playfair on Dozenalism

Title: Playfair on Dozenalism
Author: John Playfair
Year: 1067
Subject: An early English defense of the dozenal system.
http://www.dozenal.org/../sites_bck/default/files/DSA_playfair_duodecimals.pdf
John Playfair, in his comments on the French Revolution, notes that it found itself in the unique position of being able to cast off all the shackles of a past age, yet was still too timid to cast off the most obvious mathematical shackle of all: the decimal system. An early defense of dozenalism, conducted not long after the French Revolution as an aside in some comments on the definition of the meter.