Stone Buddhas, consists of a group of stone sculptures. The statues vary in size from just to and for the Great Buddhas of Nara and Kamakura. Seventy-seven of the 140 entries are located in Nara Prefecture while another 41 are in Kyoto Prefecture. With few exceptions, the sculptures are located in Buddhist temples. Hōryū-ji and Kōfuku-ji are the locations with the most entries, with 18 and 18 designations respectively. The Okura Museum of Art in Tokyo, the Nara National Museum in Nara and the Yoshino Mikumari Shrine in Yoshino, Nara each have a single National Treasure in the sculpture category; one National Treasure that consists of four sculptures of Shinto gods is located at Kumano Hayatama Taisha; and the Usuki Stone Buddhas belong to Usuki city. Writings Written materials of various type such as sūtra transcriptions, poetry, historical books, and specialist books are designated in the category . The 232 items or sets of items are National Treasures that date predominantly to classical Japan and the Imperial era of China from the 6th century to the Muromachi period. Most were made with a writing brush on paper and in many cases present important examples of calligraphy. Preservation and utilization measures To guarantee the preservation and utilization of designated National Treasures, a set of measures was laid down in the "Law for the Protection of Cultural Properties" of 1950. These direct measures are supplemented by indirect efforts aimed at protecting the built environment (in the case of architecture), or techniques necessary for restoration works. The owners or managers of a National Treasure are responsible for the administration and restoration of the work. Should the property be lost, destroyed, damaged, altered, moved, or ownership be transferred, they must advise the Agency for Cultural affairs. Alterations to the property require a permit, and the agency is to be notified 30 days in advance when repairs are conducted.(§ 43). If requested, owners must supply information, and report to the commissioner of the Agency for Cultural Affairs, regarding the condition of the property (§ 54). If a National Treasure is damaged, the commissioner has the authority to order the owner or custodian to repair the property; if the owner is non-compliant, the commissioner may carry out repairs. If a National Treasure is to be sold, the government retains the first option to buy the item (§ 46). Transfers of National Treasures are generally restrictive, and