found: Work cat: University of Washington. Cartographic Laboratory. Humptulips River, 1972.
found: GNIS online, Aug. 15, 2001: (Humptulips River, Grays Harbor county; variants: Hum-tu-lups River, Humptolups River, Humtutup River (in part), Um-ta-lah River. Humtutup River; is listed as a variant to both the Humptulips and the West Fork Humptulips rivers)
found: Wash. atlas and gaz., 1995 p. 59 (Humptulips River; Grays Harbor county)
found: Lippincott, Aug. 10, 2001(Humptulips River; SW Wash.; flows c. 20 mi. SW to Grays Harbor)
found: GeoNames [algorithmically matched]stream; 47°02ʹ28ʺN 124°03ʹ16ʺW
notfound: Web. geog.