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Collection: Walter E. Heinrichs, Jr. |
Place Keywords: United States, Arizona, Pima County, Twin Buttes - 15 Min, T17S R12E Sec 36 NE, Sierrita Mts. physiographic area, Pima447
Collection: Walter E. Heinrichs, Jr. |
Place Keywords: United States, Arizona, Pima County, Twin Buttes - 15 Min, Helmet Peak Group, Camden, Elsie, Tit For Tat, Samm'S Claims, T17S R12E Sec 9 SE, Sierrita Mts. physiographic area, Pima metallic mineral dist., Pima237
Collection: Walter E. Heinrichs, Jr. |
Place Keywords: United States, Arizona, Pima County, Twin Buttes - 15 Min, T18S R12E Sec 12 NE, Sierrita Mts. physiographic area, Pima metallic mineral dist., Pima227