found: Angle, G. C. A brief history of Shelton ... 1940.
found: GeoNames, algorithmically matched, 2009(ppl; 47°12ʹ54ʺN 123°06ʹ03ʺW)
found: Wikipedia, July 3, 2019(Shelton, Washington; county seat of Mason County, Washington; westernmost city on Puget Sound; incorporated in 1890; 47°12ʹ49ʺN 123°6ʹ22ʺW)
found: GNIS, July 3, 2019(Shelton, populated place, incorporated place, Mason County, Washington, county seat, 47.2150945 -123.1007066 47°12ʹ54ʺN 123°06ʹ03ʺW; also lists City of Shelton, civil, Mason County)