Weaving Tea Towels

I put a 15 yard warp of cottolin on my loom and then play with various weft yarns and treadlings. How many tea towels can I get? The draft is "Upholstery from Saterglantan" from page 49 of "A Handweaver's Pattern Book" (1944), by Marguerite Porter Davison. I used many of her treadlings and a few of my own.

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