Kuniyuki TOKUGAWA, the 13th family head, established the Suifu-Meitokukai Foundation and donated to it the items which had been handed down to the family, such as daimyo's (Japanese feudal lord's) belongings and ancient documents, in order to prevent them from being scattered and lost.
十三代当主徳川圀順は、財団法人水府明徳会を設立して伝来の大名道具や古文書を寄贈し、散逸を防ぐ措置を取った。