found: Centerline (Mercer Island, Wash.). Centerline, Jan. 1983, surrogate:masthead (Mercer Island, Washington)
found: LC manual auth. cd.(Mercer Island, Wash.)
found: GeoNames, algorithmically matched, 2009(ppl; 47°34ʹ14ʺN 122°13ʹ19ʺW)
found: Wikipedia, July 10, 2015(Mercer Island, Washington; Mercer Island is a city in King County, Washington located on an island of the same name in the southern portion of Lake Washington; The City of Mercer Island was incorporated from East Seattle on July 5, 1960 and composed of all the island less the 70 acre (280,000 m²) business district. Just over one month later, August 9, the Town of Mercer Island was incorporated from that business district. The two aforementioned municipalities merged as the City of Mercer Island May 19, 1970; 47°34ʹ39ʺN 122°12ʹ43.2ʺW)
