Hayes, D. (1999). Historical atlas of the Pacific Northwest: Maps of exploration and discovery : British Columbia, Washington, Oregon, Alaska, Yukon. Sasquatch Books.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रHayes, Derek. Historical Atlas of the Pacific Northwest: Maps of Exploration and Discovery : British Columbia, Washington, Oregon, Alaska, Yukon. Seattle, Wash.: Sasquatch Books, 1999.
एमएलए (8वां संस्करण) प्रशस्ति पत्रHayes, Derek. Historical Atlas of the Pacific Northwest: Maps of Exploration and Discovery : British Columbia, Washington, Oregon, Alaska, Yukon. Sasquatch Books, 1999.
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