An invaluable source for choosing the right yarn for each project. One thousand four hundred yarns (fingering, sport, heavy worsted or four-ply, bulky, and specialty) are listed in tabbed sections, with description, specifications, cleaning instructions, and how much of the yarn you’d need to knit a crewneck sweater. You can use the book to determine if the yarn you have at home will work for the project you’ve planned. Included are mail-order addresses.