4073: Atlas of Quicksilver Deposits... Estimate: Login
4074: California Gold Rush Mining... Estimate: Login
4075: California Mineralogist Report... Estimate: Login
4076: California Motherlode... Estimate: Login
4077: California Powder Works... Estimate: Login
4078: Dredges by Yuba Manufacturing... Estimate: Login
4079: Gold Rush Era Report from... Estimate: Login
4080: Gold Rush Receipt Pair [177574] Estimate: Login
4081: Land of Gold by Helper, 1855... Estimate: Login
4082: Mining Districts-Sketch Gen... Estimate: Login
4083: Mining Equipment Auction... Estimate: Login
4084: Report on The Geology of... Estimate: Login
4085: Secret Diggings Collection... Estimate: Login
4086: Six Months in the Gold Mines... Estimate: Login
4087: Colorado's Famous Mining Towns... Estimate: Login
4088: Fossett's Work on Colorado... Estimate: Login
4089: Rush to the Rockies "Pikes... Estimate: Login
4090: Eastern Nevada Mining... Estimate: Login
4091: USGS Geology and Ore Deposits... Estimate: Login
4092: USGS Lake Bonneville by... Estimate: Login
4093: Annual Report of "Western... Estimate: Login
4094: Explorations & Surveys West of... Estimate: Login
4095: Gold Mines of the World by... Estimate: Login
4096: Hayden Survey, Reports of the... Estimate: Login
4097: Hydraulic Mining Books, 7... Estimate: Login
4098: Hydraulic Mining Scenes [171219] Estimate: Login
4099: Metallurgy of Gold, 1896... Estimate: Login
4100: Mine Prospecti &... Estimate: Login
4101: Mineral Resources West of... Estimate: Login
4102: Mineral Resources West of the... Estimate: Login
4103: Mining & Dredge Book Pair... Estimate: Login
4104: Mining & Scientific Press... Estimate: Login
4105: Mining & Scientific Press... Estimate: Login
4106: Mining Co. Annual Reports (4)... Estimate: Login
4107: Mining Ephemera (4) [177007] Estimate: Login
4108: Mining Journal Collection... Estimate: Login
4109: Mining Prospectuses for NV, AZ... Estimate: Login
4110: Mining Prospectuses for WA... Estimate: Login
4111: Mining Reference & Manual... Estimate: Login
4112: Report of the Geological... Estimate: Login
4113: Rudimentary Treatise on... Estimate: Login
4114: US Geological Exploration of... Estimate: Login
4115: USGS Eighth Annual Report... Estimate: Login
4116: USGS Third Annual Report, 1882... Estimate: Login
4117: USGS Twentieth Annual Report... Estimate: Login
4118: San Francisco Assay and... Estimate: Login
4119: Deister Concentrator Slimer... Estimate: Login
4120: Sterling Butter Knife with... Estimate: Login
4121: Acme Breweries "The Quest for... Estimate: Login
4122: Stampless Cover-California... Estimate: Login
4123: Lawson's Survey Map Upper... Estimate: Login
4124: Northern Cal Gold Mining Docs... Estimate: Login
4125: Big Bear Lode Mining Ephemera... Estimate: Login
4126: Brownsville Mining Camp... Estimate: Login
4127: Laws of Gregory Diggings &... Estimate: Login
4128: Cripple Creek Silver Spoons... Estimate: Login
4129: History of Cripple Creek... Estimate: Login
4130: Independence Min Silver Spoon... Estimate: Login
4131: Stratton's Independence... Estimate: Login
4132: Colorado's Cripple Creek... Estimate: Login
4133: Georgetown Cabinet Card by... Estimate: Login
4134: Georgetown, Colorado... Estimate: Login
4135: Leadville Mining Sterling... Estimate: Login
4136: Leadville, Colorado... Estimate: Login
4137: Pike's Peak Gold Rush... Estimate: Login
4138: Victor Mining Print by Foott... Estimate: Login
4139: Colorado Letter/letterhead... Estimate: Login
4140: Colorado Mining Ephemera (25... Estimate: Login
4141: Colorado Mining Ephemera... Estimate: Login
4142: Mining Related Wood Engravings... Estimate: Login
4143: Dade Coal Mine Albumen Photo... Estimate: Login
4144: Atlanta Mine Docs, 1866-70 (5)... Estimate: Login