Crewel embroidery, or crewelwork, is a type of surface embroidery using wool. A wide variety of different embroidery stitches are used to follow a design outline applied to the fabric. The technique is at least a thousand years old.[citation needed]
Crewel embroidery is not identified with particular styles of designs, but rather is embroidery with the use of this wool thread.[1]: 102 Modern crewel wool is a fine, two-ply or one-ply yarn available in many different colours. Crewel embroidery is often associated with England in the 17th and 18th centuries, and from England was carried to the American colonies. It was particularly popular in New England. The stitches and designs used in America were simpler and more economical with the scarce crewel wool. The Deerfield Society of Blue and White Needlework (1896–1926) revived interest in crewel embroidery in the United States.