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- Oregon Journal (Firm) 90
- Oregonian (Firm) 50
- Portland Chamber of Commerce (Or.) 10
- University of California, Berkeley 8
- New York Times Company 5
- Muskegon Chronicle 4
- Oregon City Enterprise Courier (Oregon City, Or.) 4
- American Nature Association 2
- Izaak Walton League of America 2
- Nature 2
- Oregon Audubon Society 2
- Statesman Journal 2
- "Lang Syne" Society of Portland, Oregon 1
- Academy of Science of St. Louis 1
- Albany Democrat-Herald 1
- Alkahest Bureau 1
- Altoona Tribune 1
- American Forestry Association 1
- Barre Gazette (Barre, Mass.) 1
- Berkeley Daily Gazette (Berkeley, Cal.) 1