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Western gem hunters atlasrock locations from California to the Dakotas and British Columbia to TexasBookby Johnson, Cy (Humphrey Cyril), 1905-
Published 1971 -
Northwest gem trailsa field guide for the gem hunter mineral collector and tourist covering both popular and little known areas of Oregon Washington Idaho British ColumbiaBookby Dake, H. C. (Henry Carl), 1896-1969-
Published 1962