Bibliography
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- Croly, Herbert. The Promise of American Life. New York: Macmillan, 1909, 454, 399–406.
- Houck, Mike, Nancy Rottle, and John Owen. “The Emerald and the Rose: Open Space Planning in Metropolitan Seattle and Portland,” In Planning the Pacific Northwest, edited by Jill Sterrett, Connie Ozawa, Dennis Ryan, Ethan Selter, and Jan Whittington, 100. Chicago, IL: APA Press, 2015.
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