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geonames.usgs.gov/pls/gnispublic/f?p=gnispq:3:::NO::P3_FID:1136645
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en.wikipedia.org/wiki/Portland,_Oregon (16 May 2010)
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en.wikipedia.org/wiki/Neighborhoods_of_Portland,_Oregon (22 Aug 2010)
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geonames.usgs.gov/pls/gnispublic/f?p=gnispq:3:::NO::P3_FID:2411471