A remote outpost in 1840, California is now the leading industrial state with a Gross Domestic Product that would place it among the world’s largest national economies. In The Evolution of California Manufacturing, Paul Rhode uses a unique and comprehensive time series data set to map the state’s industrial development from the Gold Rush to 1997. After identifying six long-run processes that help account for the state’s emergence as an industrial leader, the study tracks recent trends in California manufacturing. It notes that many recent developments-including energy shortages, military cutbacks, and employment volatility-have occurred periodically throughout California’s history, and that the 1990s was not a period of especially rapid structural change.