Group of maps for the new Almaden Quicksilver Mining Company. A cross-section and longitudinal section for the Cora Blanco mine blueprint, circa late 1800s. 21 x 25". This longitudinal and cross sections show the or zones. It appears the or body outcrop where the main shaft is for the Cora Blanco mine. B. Blueprint, plan of the furnace yard of the Quicksilver Mining Company, New Almaden California, 1879, scale 30 feet to the inch. 24 x 36". C. Untitled map, geologic map of the underground workings around the San Pablo shaft. 22 x 40", circa 1920. At the northern end of this map is the Santa Rita shaft. D. Blueprint copy of a January 1880 map, map of the property of the Quicksilver Mining Company, New Almaden, California. 1 inch equals 20 chains. By JB Randall manager. The map shows the large property position of the New Almaden Quicksilver Mining Company with shaded relief, buildings and prospects all located clearly as are the mines. 28 x 40". E. Blueprint copy of an 1880 map, topographical map of the central part of the property of the Quicksilver mining company, new Almaden California, 1 inch equals 300 feet. Same size as the prior map. This map shows the detail of all the townsite and mine workings along with shaded relief. F blueprint copy of a map of the mine workings around several of the mines at new Almaden. The map curiously shows a number of key shafts and inclines however it does not assign a name to any of them other than quote engine shaft inclined shaft shoot flume and so on size is 33 x 51 and it's a blueprint copy of an early map my guess is it may even be pre-1880 because it does not label the shafts by name. California