For detail information, refer to 'On Zassho (or Karei: butler) of the Kashuji family, the Toshokuge (high court nobility who is allowed to enter the Imperial Palace) of late modern ages ---"Kaki" (The Family Chronicle) written by Fumikage SODEOKA, Kurodogata Jigekanjin (lower-ranked courtiers who were not allowed to enter the court official of Chamberlain's Office)' as an example" by Shintaro NISHIMURA (the first appearance was in "Proceedings of Historical Museum" No. 34 [March, 2003]) included in 'Zassho Jigekanjin of Toshokuge' (addition and alteration to the original) and "the Medieval Imperial Court and Jigekanjin" (Yoshikawa Kobunkan Inc., 2008) ISBN 978-4-642-02330-6 P274-275).
詳細は西村慎太郎「近世後期堂上公家勧修寺家の雑掌について―蔵人方地下官人袖岡文景『家記』を事例に」（初出『史料館研究紀要』第34号（2003年3月）・所収「堂上公家雑掌の地下官人」（加筆・改題）『近世朝廷社会と地下官人』（吉川弘文館、2008年）ISBN978-4-642-02330-6P274-275）を参照のこと。