What I Saw in California: A Description of Its Soil, Climate, Productions, and Gold Mines, with the Best Routes and Latest Information for Intending Emigrants; to Which is Annexed an Appendix Containing Official Documents and Letters Authenticating the Accounts of the Quantities of Gold Found, with Its Actual Value Ascertained by Chemical Assay; also Late Communications Containing Accounts of the Highest Interest and Importance from the Gold Districts; with a Map