The aim of this study is to clarifying the design works of Chuta Ito (1867〜1954), who have had a great influence on modern Japanese architectural history, through the historical material drawings that were newly found. In previous studies, the 11 projects in the Meiji Era were referred. And the method of Ito's design works was analyzed. In this paper, designs of the 34 projects in the Taisho and Showa Era and their planning processes were shown.
