In 1915, astronomical records and family head's diaries possessed by the Tsuchimikado family were presented to the Imperial Household Ministry, and many of them are still stored in the Imperial Household Archives.
1915年、土御門家が保有していた天文記録や当主の日記などが宮内省に献上されて、その多くが現在でも宮内庁書陵部に保管されている。