Although he was allowed to take pictures of many important manuscripts and the number of photos reached about five hundred thousand, he was not allowed to take the manuscripts out in order to take pictures or to bring a camera and other implements in the place where the manuscripts were preserved.
数多くの重要な写本は写本を写真に撮ることなども許され、そのフィルムの枚数は約50万枚にも及んだものの、写真を撮るために持ち出したり、あるいは撮影機材を写本の所蔵場所に持ち込んだりすることは許されなかった。