The Craft of the Crochet Hook

The Craft of the Crochet Hook. This and many antique (public domain) craft books are available at the linked page. What an awesome resource!

Old point lace : and how to copy and imitate it

"Old Point Lace: & How To Copy It" By Daisy Waterhouse Hawkins - Online Vintage Instruction Book

The Modern Crochet Book (in the public domain)

The Modern Crochet Book. Published Containing original ideas for combining Crochet with Embroidery and with Fancy Braids, together with new and Unusual Designs for use on Household Linen, on Underwear and as Dress Trimmings.