Genji Monogatari Emaki
The word "emaki" stems from the word "emakimono" meaning "picture scrolls". The emakimono picture scrolls consisted of two designs: Pictures that were painted on a scroll with text added to the same scroll or a number of paintings that accompanied passages of text and were joined together in a scroll. The first known picture scroll was produced in Japan during the late ninth or tenth century. The "Genji Monogatari" picture scroll, however, was produced in the early twelfth century. Not only is the "Genji Monogatari Emaki" the oldest surviving monogatari scroll but it is also the oldest surviving non-Buddhist scroll in Japan. There is no exact date to the scroll, but it is estimated to being sometime between 1120 and 1140, in which case it was created just a little over a century after Murasaki Shikibu wrote "The Tale of Genji".
Archimedes
The foremost document containing the work of Archimedes is the Archimedes Palimpsest. In 1906, the Danish professor Johan Ludvig Heiberg visited Constantinople and examined a 174-page goatskin parchment of prayers written in the 13th century AD. He discovered that it was a palimpsest, a document with text that had been written over an erased older work. Palimpsests were created by scraping the ink from existing works and reusing them, which was a common practice in the Middle Ages as vellum was expensive. The older works in the palimpsest were identified by scholars as 10th century AD copies of previously unknown treatises by Archimedes. The parchment spent hundreds of years in a monastery library in Constantinople before being sold to a private collector in the 1920s. On October 29, 1998 it was sold at auction to an anonymous buyer for $2 million at Christie's in New York. The palimpsest holds seven treatises, including the only surviving copy of "On Floating Bodies" in the original Greek. It is the only known source of "The Method of Mechanical Theorems", referred to by Suidas and thought to have been lost forever. "Stomachion" was also discovered in the palimpsest, with a more complete analysis of the puzzle than had been found in previous texts. The palimpsest is now stored at the Walters Art Museum in Baltimore, Maryland, where it has been subjected to a range of modern tests including the use of ultraviolet and light to read the overwritten text.