List of hillside letters in Oregon
This is a list of hillside letters (also known as mountain monograms) in the U.S. state of Oregon. There are at least 35 hillside letters, acronyms, and messages in the state, possibly as many as 40; primarily in small towns in the arid eastern half of the state.
- Corning, Evelyn (2007). Hillside Letters A to Z : A Guide to Hometown Landmarks. Missoula, Mont.: Mountain Press Publishing Company.
- Rocha, Guy (June 2004), "Hillside Letters: In Plain Sight But Not Intended for Planes", Sierra Sage
- Parsons, James J. (1988). "Hillside Letters in the Western United States". Landscape (Sante Fe, N.M.) 30 (1): 15–23. Retrieved 2011-08-09.