Walter S. Bowman (1865-1938) was a professional photographer who worked in Pendleton, Oregon, from the late 1880s to the mid 1930s. Bowman's photographs document daily life in Eastern Oregon, including special events such as the Pendleton Round-Up. The collection consists of almost 800 negatives and prints representative of the span of the photographer's work, but his noted images of tribal people were largely destroyed after his death.
Edward J. Partridge (1856-1891) and his brother, William H. Partridge (1860-1939), were important photographers active in Oregon, Alaska, and San Francisco. The collection consists of seventy images, primarily vintage prints. Other Partridge images appear in the Day collection and the Angelus Studio collection.