I have been reading these posts on tipis and living in a tipi with great interest. Love the heated floor construction with walls. The shredded Rain Cover was interesting. Those things never did exist in the history of tipis nor what was called the Ozan by the Laubins. We know that the lining in a tipi is the Ozan. That was all started after the 20th. century by the father of Boy Scouting Thomas Seton. In high winds they are dangerous to your poles. But in all this great information I have gleamed off this site let me add this site to go to for more information. www.tipis.org and a book on the Historical tipi with far more information than the Laubin book or added information on tipis as the most the book is on tipis and the construction:Tipis, Tepees, Teepees: History and Design of the Cloth Tipi .
http://www.amazon.com/Tipis-Tepees-Teepees-Linda-Holley/dp/1586855115/ref=sr_1_1/102-4719946-9795367?ie=UTF8&s=books&qid=1174086974&sr=8-1
