Koukazakki
"Koka Zakki" was authored by Fujikawa Sada (1791 - 1862), who recorded a diversity of events and information while teaching Japanese fencing in the Shitaya district of Edo (present-day Tokyo). Sada used the pen name Seisai and others. He also wrote other miscellaneous notes ("zakki") for the Bunsei, Tempo, and Kaei eras.