From the introduction: "The threads available for needlework today are wonderful. There are all kinds of fibers, colors, sizes, and constructions. How does one choose? Which threads are comparable in size? What thread can be substituted for a discontinued or unavailable thread? There are many variables that determine thread choice - type of embroidery, size of the ground fabric or canvas, individual technique, special effects - and it can be very difficult to account for them all. Because of these variables, we discovered it was more useful to compare threads by size using eight readily available embroidery threads as our size standards. If you are familiar with cotton embroidery floss, pearl cotton thread, Paternayan Persian Wool, and 1/8" and 1/16" ribbon, you will be familiar with the sizes of all threads listed in this book, and be able to choose what best suits your individual needs. THE THREAD THESAURUS provides information on over 350 threads from Accentuate to Zwicky. With this information you will learn about threads, their fiber content and size, and tips on how to use them." A veritable bible on threads! 8.5" x 11", 123 pages, stated First Edition (2002). Spiral bound so that it lies flat for easy consultation.