The Twelfth Biennial Report of The Board of Trustees and The Superintendent of the Oregon State Insane Asylum to the Twenty-Fourth Legislative Assembly 1907, pages 1-51. Includes information regarding officers; Board of Trustees; a letter to the Oregon Legislative Assembly from the Governor, the Secretary of State, and the State Treasurer; Superintendents Report; letter to the Oregon State Insane Asylum Board of Trustees from Superintendent J. F. Calbreath; patient statistics.