Photographs used in a 1974 exhibit at First Unitarian Church in Portland, Oregon, in celebration of the 50th anniversary of the church building and of Jamieson Parker (1895-1939), the Portland architect who designed it. The exhibit focused on Parker and his work; the photographs in this collection were largely taken in the 1970s, and most depict Oregon residences and churches he designed, including First Unitarian.

Collection includes the diary of Maria Louise Flanders, 1926-1929; specifications by Jamieson Parker for a house in Portland Heights, Portland, Oregon, for Maria Louise Flanders and Caroline Flanders; certificates; and correspondence and documents relating to Ecola State Park.

Oral history interview with Margaret Biddle Parker conducted by Elisabeth W. Potter and Alfred Staehli on March 15, 1984. Parker discusses the career of her husband, Portland architect Jamieson Parker.

Oral history interview with Margaret Biddle Parker conducted by Charles Digregorio in two sessions, on December 31, 1974, and January 15, 1975. Parker discusses her life and social activities, and the life and career of her husband, Portland architect Jamieson Parker.