David B. Simpson Jr. (1898-1976) was a Portland civic leader and real estate agent. He served as a captain in World War I and was active in post-war development. Collection includes naturalization papers for David B. Simpson, 1890 and 1894; obituaries for David B. Simpson, Jr., 1976; correspondence, 1950-1983; award certificate from President Gerald Ford, 1950; and biographical information about Sir James Young Simpson.