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.
Joaquin Miller (1837-1913) was the pen name of Cincinnatus Hiner Miller, a Northwest writer, newspaper publisher, and poet. The collection (1868-1960) contains correspondence and published works by Miller, and also material collected by Pherne Miller regarding her Uncle Joaquin, including photographs, as well as her personal papers.