California and its gold mines : being a series of recent communications from the mining districts, upon the present condition and future prospects of quartz mining : with an account of the richer deposits, and incidental notices of the climate, scenery, and mode of life in California / edited by Robert Allsop. - Allsop, Thomas, 1795-1880. (Western Americana, frontier history of the trans-Mississippi West, 1550-1900, 1853)