Founded in 1917, L. Thorn Company is one of the leading distributors of brick and stone and manufacturers of concrete masonry units. It is a family-owned company that serves homebuilders, contractors and architects. It sells various accessories, such as clay flu liners, polyurethane sealants, retaining wall adhesives, and ceramica keepstones and address stones. L. Thorn Company has its production facilities and corporate headquarters located in New Albany, Ind., and has a showroom in Louisville, Ky. The company is a member of several associations, such as the Home Builders Association, the Indiana Concrete Masonry Association and the brick industry.