This sock is made from an original broadside instructing the citizens of the Philadelphia area to make these socks for the Philadelphia Sanitary Commission Fair during the Civil War. Ours is a faithful reproduction made according to the original instructions from 100% wool and would be the perfect complement to your Civil War impression! Note - our reproductions are completely hand knit and are not made on a late 19th century machine, as are some reproductions being offered. We are committed to authenticity and will not take short cuts with our socks!