The series consists of Nakayama published and unpublished works, primarily on the subject of his missionary and church work. The series includes full and partial manuscript and typescript drafts, as well as final published versions, of religious tracts and newsletters, biographical or autobiographical books, non-fiction works on the Japanese Canadian / Issei community, and poetry written by Nakayama. In addition to draft and published versions of Nakayama’s writings, the series contains supporting materials such as publishers’ contracts and correspondence and research related to “Issei, Stories of Japanese Canadian Pioneers.” Materials in the series are in Japanese and English.