"The Preservation of Sign Language" Film by Veditz, George WPublication Date: Original: 1913
George William Veditz (August 13, 1861 – March 12, 1937) was an American educator, filmmaker, and activist who served as the seventh President of the National Association of the Deaf from 1904 to 1910. He is remembered as one of the most ardent and visible advocates of American Sign Language (ASL) and was one of the first people to film ASL. His 1913 film "Preservation of the Sign Language" was added to the National Film Registry in 2010. (Quoted in full from Wikipedia)