In the early 1960's, when I was a brand new weaver, I found the book "How to Weave Linens" by Edgar F. Worst in a used book store in New York City. My copy of this 1926 gem was well worn when I bought it, and is now even more so. It contains some history, construction diagrams of looms, reels, and other equipment, and a generous assortment of photos of craftspersons engaging in all aspects of linen production. My very favorite photo is of a young man in knickerbocker pants chaining off a warp from a warping mill. It also contains many 4-, 5-, 6-, and 8-shaft drafts for linen household textiles and actual photos of some of these fabrics. The structures include plain and fancy twills, lace weaves, and a few M's & O's.
I was leafing through the book the other day, looking for inspiration for a new threading on my 4-shaft loom, when I spotted this unusual M's & O's design. It's a standard threading, but the treadling is odd in that it produces twill-like sections in the cloth. I entered the draft in my weaving software and corrected a few small errors, and thought you might like to see the result. Worst attributes the pattern to Alcestis Low of Vermont.

I see that the book is available on the used book market for anywheres from $65 to nearly $800. You may be lucky enough to spot a copy at a weaver's studio sale. If so, snap it up. The photos of the actual cloth are worth the price, although I suspect some of the drafts are a bit problematic.