Orla (stitchlily on Rav) has a blog and has posted a very comprehensive book list that you might find intriguing! She writes:
"Here is a collection of books or articles specifically on Irish Textiles I have come across so far. It includes historical and technical books, journal articles, and anything else I could find!"
She also notes that she (and many other Ravelers) have the Japanese Book, Irish Crochet Lace and they find it quite useful. Pomadour24 is a seller on eBay and Etsy, and she is a great resource for Japanese crochet books.