"The Tosa Diary's Experiences Abstract," written by Bansai KATO, doesn't have the year of creation in the book, but it seems to have been written around the same time that "The Tosa Diary with Note" by Bokuyu HITOMI, which has a postscript dated 1661, and "The Tosa Diary's Abstract" (by Kigin KITAMURA) were completed.
加藤盤斎の『土佐日記見聞抄』は年代がなく成立年は不明であるが、万治4（1661年）年の跋がある人見卜幽の『土佐日記附注』、北村季吟の『土佐日記抄』などと同時期のものであるらしい。