This series contains biographical information on over 500 Chinese Christians and a few non-Christians, assembled by Hayes while working as a missionary in Anhui province under the auspices of the Methodist Episcopal Church. The handwritten notes were originally bound into three binders (Bao-Lew; Li-Zia; and Chen-Yu) and are organized alphabetically by family name. The collection utilizes a variety of romanization schemes, often providing alternate spellings of names. Most entries include Chinese characters for the names, as well as a short bibliography or reference to further published information. A very small minority of entries include relevant newspaper clippings, and a portrait of the person referenced.