This book is from about 40 years ago. It's a textbook from the Japan Vogue Company's correspondence course on knitting, "A Course to Successfully Knit Sweater Book Projects." This is just these two books; there are no other materials. While not heavily soiled, there is some aging, including light staining on the back cover, rust on the closures, and slight yellowing. One book teaches the very basics of knitting. There is one spot where it has been colored over with colored pencil. The other book contains instructions for knitting vests, pullovers, and cardigans. For those who understand that this is a used item, thank you.