- United States. Forest Service14
- Oregon Pioneer Association. Reunion10
- Southern Pacific Company4
- University Of Oregon4
- Graves, Henry Solon, 1871 19513
- Leiberg, John B. (John Bernhard), 1853 19133
- Lockley, Fred, 1871 3
- Minto, John, 1822 19153
- Muir, John, 1838 19143
- Oregon. Department Of Forestry3
- Teal, Joseph Nathan, 1858 19293
- Williams, John Harvey, 1864 3
- [Author Not Identified]2
- Conover, Charles Tallmadge, 1862 19612
- Fernow, B. E. (Bernhard Eduard), 1851 19232
- Greeley, William Buckhout, 1879 2
- Hodgson, Allen H., 1884 19392
- Meany, Edmond S. (Edmond Stephen), 1862 19352
- Mitchell, John H., 1835 19052
- Nash, Wallis2