Mines and mining in El Dorado County : the mineral belt : its slates and ores : deep mining : principal mines - Roche, Carl. (San Francisco : Francis Valentine & Co., Printers and Engravers, 1882)
Double columns.
Microfilm.
Mode of access: Internet.
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MNEG; 85-1420: Original shelved as: F862 3 R54
MNEG; 85-1420: CU-BANC SN00468.5 (Camera negative stored at National Underground Storage, Boyers, Pa.; vault 36, sec. 6, drawer 4)
Keywords: Mines and mineral resources; Mines and mineral resources -- California -- El Dorado County; California -- El Dorado County