Cover of Revised Edition:
Source: Permanent Publications
Publisher: Rocky Mountain Research Center
This book shows you how to: Inexpensively store warm summer sunshine for heating all winter.
Where to get it?
1st Edition (1983):
Revised Edition (2013):
Paul on The Survival Podcast talking about wofatis
Paul on The Survival Podcast talking about wofatis again!
Passive Annual Heat Storage Thread
the first wofati: allerton abbey
the second wofati: wofati 0.8
wofati 10x10 at wheaton laboratories
Umbrella Homes by John Hait
Paul Wheaton's Wofati Article