Papers of John Franklin Calbreath, an Oregon physician and state senator, including family letters of Sidney and Mianda Smith, John U. Smith, and Irene Smith Calbreath; political letters from John H. Mitchell and George W. McBride; a copy of an 1839 overland journal of Sidney Smith; accounts and notebooks of John Franklin Calbreath; and biographical and genealogical materials.

Speeches and three items of correspondence of U.S. Senator John H. Mitchell (1935-1905). Mitchell was a U.S. senator for Oregon who servered at various points from the 1870s to the 1900s. In 1905, he was convicted of having accepted bribes, and he died while awaiting an appeal for his conviction.