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- Izaak Walton League of America 5
- Field Museum of Natural History 3
- Oregon Journal (Firm) 2
- Boston City Club 1
- Chicago Congregational Club 1
- Chicago Park District (Chicago, Ill.) 1
- Chicago's American 1
- Ludwick Institute 1
- Massachusetts Audubon Society 1
- Moose Hill Wildlife Sanctuary 1
- Nature 1
- Oregonian (Firm) 1
- Portland Chamber of Commerce (Or.) 1
- University Club of Chicago 1