This section is from the book "Spool Knitting", by Mary A. McCormack. Also available from Amazon: Spool Knitting.

This is made of white knitting cotton. It requires nine yards of web for a cloth ten by twelve inches. Measure twelve inches of web, turn and sew toward the end.
When the twelve-inch piece is sewed turn again and sew. Continue in this way until the desired size is obtained.
With a piece of the cotton make a loop at one corner by which to hang it.
 
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