McCoy was one of the most influential cookie jar makers of the 20th century. Nelson McCoy and J.W. McCoy established the Nelson McCoy Sanitary and Stoneware Company in Roseville, Ohio, in 1910. Cookie jars were made from about 1940 until December 1990 when the McCoy factory closed.
McCoy is credited with making the first cookie jar that looked like a person, which depicted a mammy holding cauliflower. Since then, the company went on to make a number of specialized cookie jars that promoted several major brands, including Quaker Instant Oats and Snoopy. Due to the popularity of some the company's products, many replicas have been made. However, a genuine article can be easily verified and is very valuable.