This collection consists of the personal papers of Edwin John Allen, Jr. The contents pertain to his service as a missionary in Japan, as well as a naval officer. Also included are some papers and personal affects of his son, Thomas Allen.

Collection includes notebooks, publications and writings, correspondence, Chinese language study materials, and ephemera created and collected by Arthur Hummel between 1905 and 1975. Most of the materials focus on Hummel's professional life and his work with Chinese materials. However, there is some biographical materials, including a diary and a interview transcript outlining Hummel's life and works.