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Register of mines and minerals : San Diego County, California
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Map of San Diego County California issued by the State Mining Bureau Ferry Building San Francisco
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Mining locations located by red numerals. We do not have key to those numbers. Julian District is shown on submap because of the number of locations. Note the number of oil companies in the Coachilla Valley, presumably all dry holes. Submap: Julian District. MS note: 327363. Prime meridian: GM. Relief: no. Graphic Scale: Miles. Projection: Cylindrical. Printing Process: Lithography. Verso Text: MS notes: San Diego Co. (Mining Map) 1902 $7.50 $175.
327363
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Tullock mine, Amador County, California : Report of the American bureau of mines
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266325
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Catalogue of the State Museum of California ... : being the collections made by the State Mining Bureau
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299205