Baker, Knapp Group Map
"Baker [County] area mines - Highland Gold Mine Co. - Knapp Group - Sumpter, Or. Maps - circa 1901-1903" "Property of the Highland Gold Mines Co.- Knapp Group - Sumpter, Oregon - Granite, Grano-Diorite, Argillite - U.S. Deputy Mineral Surveyors"
Helten, Paula (curator)
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Donated by Alice Morehead to Fred Hill From the Collection of Fred Hill Photogaph print in 2010.15 collection provided by Bruce Morehead in 1972