I have an article in the Winter 2020 issue of PieceWork, titled Evolution in Early Crochet: From Flat-Hook Knitting to Slip-Stitch Crochet. It supplants the text that originally appeared in this post, which will be refocussed on providing supplementary information to the article. Printed and electronic editions of the issue where the article appears can be obtained via a link on this blog’s Publications Page.