The collection consists primarily of correspondence, photograph albums, lantern slides, printed material, film reels, and sermon drafts documenting the years DuBois S. Morris (Class of 1893) spent as a Presbyterian missionary in Eastern China during the late 1800s through the 1920s.

The majority of the correspondence is from the years leading up to, and including, DuBois Morris's time in Anhui Province, with main correspondents being family members, such as DuBois S. Morris, Alice Ray Buell Morris, Theodore Wilson Morris, and Alice Ely Buell. A large portion of the correspondence and some of the ephemera were collected by Alice Ray Buell Morris, as a large portion of correspondence is addressed to her, and one of the donor notes refers to Alice Morris as the "saver of all these letters." Much of the printed material in the collection are annual and station reports from missions to the Central Presbyterian Church, primarily from Huaiyuan, which is romanized as Hwai Yuen and Hwaiyuan in the collection.

Another significant portion of the collection is photograph albums and the lantern slides. These albums and slides predominantly depict the communities, locales, and people affected in Huaiyuan by the missionary work sponsored by the Central Presbyterian Church in New York. There are duplicative images among the albums themselves, among the slides, and between the albums and slides. The photograph albums also include family photographs of the Morris family and their home(s) in Huaiyuan, as well as other missionaries in Anhui Province; and photographs of family members in the United States and Canada. Some of the photograph albums have loose photographs that had not been affixed to the albums. Photographs have captions in various hands. There are also numerous donor notes throughout the collections on post-it notes, scraps of paper, and directly on documents with summaries, identifying information, and transcriptions. Some donor research was also retained among the materials. There is some offensive language used to refer to Chinese people in the materials. There are far fewer identifying annotations among the lantern slides, but the contents of the slides are similar to the albums.

There are also reels of 16mm and 8mm film. The reels consist of a variety of subjects, with the majority of labels indicating various overseas trips across Europe and East Asia, as well as of the Morris's time in China. Nearly all of the film reels feature footage from visits to Stoney Lake, Ontario. There is also footage of regattas, picnics, and other family events.

To a lesser extent, the collection contains family papers, which includes photographs, correspondence, and ephemera; school and alumni-related materials, such as ephemera, printed material, and schoolwork; and art-related materials, such as ephemera, lectures, and correspondence and documentation related to Morris's art collection and his donation of artwork to the Princeton Museum of Historic Art.