Timothy Barrett is a paper specialist and research scientist at the University of Iowa Center for the Book, and an internationally recognized scholar, lecturer, and practitioner in the field of Japanese handmade paper. He is author also of Nagashizuki: The Japanese Craft of Hand Papermaking.
I am a hand paper maker and own lots of books on the subject. This is by far one of the best I have seen. This book has it all, In depth on everything from making your own equipment to the technical challenges of plant fiber production, along with great drawings and very clear instructions. I return to it again and again. A++