In 1931, its administration was moved from the Owari Tokugawa family to Tokugawa reimeikai established by the 19th family head Yoshichika TOKUGAWA, and in 1950, its administration was moved to Nagoya City and it has been managed by Hosa Library, City of Nagoya.
1931年、尾張徳川家から第19代当主の徳川義親によって設立された徳川黎明会に管理が移り、1950年に名古屋市に管理が移り名古屋市蓬左文庫の管理となった。