Bristol board (also known as Bristol paper) is a heavy-weight drawing paper used for technical drawing, illustration, and other 2-dimensional art. Bristol board is rated by the number of plies it contains. Original Bristol board was made in Bristol, England and was a pasted board made of paper containing rags. Bristol board provides two working surfaces, front and back; separating it from illustration board, which has only a front working surface. The surface texture can vary for different applications, including a smooth plate finish and a medium vellum. Artists working with friction-based media, such as crayon, chalks, or charcoal would use a rougher texture. Smooth finishes are generally more suited to other types of media, such as inks. Bristol board art paper is also used for paperback book or catalog covers, file folders, tags, and tickets. Bienfang Bristol board is quality-made in the USA.