The "Great Book of Celtic Patterns, Second Edition, Revised and Expanded" by Lora S. Irish is a comprehensive design sourcebook for artists and crafters, focusing on the intricate and beautiful patterns found in Celtic art. Published by Fox Chapel Publishing Company, this trade paperback features a variety of designs that can be used for woodworking, general crafts, and other artistic endeavors. With a wealth of inspiration and techniques, this book is a valuable resource for anyone looking to create unique and meaningful projects with a Celtic flair.