Dietrich Deumling: The Roles of the Railroad in the Development of the Grande Ronde Valley [diplomamunka]. (angolul) Flagstaff (Arizona): Észak-arizonai Egyetem. 1972. 15–16. o. OCLC4383986
An Illustrated history of Union and Wallowa counties. (angolul) (hely nélkül): Western Historical Publishing Company. 1902. 138. o. OCLC16675525