Hmm. I am feeling like a dirty stop out, going so silent for so long. Of course my devoted followers know it's because I am up the the gunwales in Made on Marion, which is a 7 day, 80 hour a week commitment, but I don't want to go down the rabbit hole!
And so in the interest of being of interest, I am reverse engineering this post based on the photos I have taken recently.
My search for vegan alternatives has also led to stocking linen and bamboo 'sliver,' which is the carded, pre-spun state of the fibre. Incidentally, I think linen sliver would make an excellent 18th C wig. I only have a little bit, as much for curiosity sake and because the design students who comprise such a big part of our clientele are always looking for unusual materials to make unusual things.