1911. 2011-05-26T15:58:17Z. 2015-10-21T14:59:59Z. Geological Survey (U.S.). U.S. Geological Survey. English. Public. Burlington (Wash.), Camano Island (Wash.), Island County (Wash.), Marysville (Wash.), Mount Vernon (Wash.), Port Susan (Wash.), Skagit Bay (Wash.), Skagit County (Wash.), Skagit River (B.C. and Wash.), Snohomish County (Wash.), Stanwood (Wash.), Tulalip Indian Reservation (Wash.), Washington (State), and Whidbey Island (Wash.).
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1904. 2011-05-26T17:27:41Z. 2015-10-21T15:00:00Z. Geological Survey (U.S.). U.S. Geological Survey. English. Public. Chelan County (Wash.), Chelan, Lake (Wash.), Lake Chelan National Recreation Area (Wash.), Mount Baker National Forest (Wash.), Okanogan County (Wash.), Snohomish County (Wash.), Stehekin (Wash.), Stehekin River (Wash.), Washington (State), and Wenatchee National Forest (Wash.).