This is the one I was looking for, for you.
http://www.quiltingboard.com/t-43232-1.htm (Has lots of fact finding, information and references.
http://www.quiltingboard.com/t-4806-1.htm (This one is good.)
http://www.quiltingboard.com/t-31445-3.htm (instructions on pg 2)
Happy sewing/Dorothy