You can find 4,027 items of historical materials donated by the family of Professor Emeritus Takao Tsuchiya (1896-1988).
It consists of the following three types of materials:
(1) Early modern documents purchased by Professor Tsuchiya mainly in the 1930s from antiquarian bookstore such as the Ganshodo Bookstore in Kanda, Tokyo.
(2) Manuscripts from the Aizawa Family, samurais of the Sendai Domain and the parental home of his foster mother.
(3) Modern historical materials which Professor Tsuchiya helped in the compilation such as;
・　Materials related to "Nihon Ginko 100nen-shi" 
・　Materials related to "Chiho Kin'yu-shi" 
・　Materials on "Nidai Kosuge Tanji Denki" 
・　Materials on Akashi Teruo, president of the Dai-ichi Bank
etc.