In 1857, Frederick W. Redington and William H. Sanford, Jr. founded the Sanford Manufacturing Company, initially specializing in inks and glues. The pen has undergone many notable changes that revolutionized the act of writing. Today, Sharpie has become one of the leading manufacturers of writing instruments in North America. Its iconic marker pen was designed in 1964 and has gained popularity in part because of a thriving memorabilia industry via autograph seekers and celebrities. Innovation is a key tenet of the brand, which continuously develops new products.