The National Diet Library’s online database is a treasure trove of primary sources of Bakumatsu-Meiji Restoration history. This one, for example, has been useful in my research on the Shinsengumi:

Tamamushi Yoshishigé’s Kanbu Tsūki (官武通紀), a historical record of the three-year period from Bunkyū 2 to Ganji 1 (1862 – 64),was originally published in 1913 by Kokusho Kankōkai. Tamamushi was a samurai of Sendai Han.