Native Sources of Japanese Industrialization, 1750-1920 /by Thomas C. Smith. Native Sources is a collection of seminal essays on the demographic, economic, and social history of Tokugawa and modern Japan by one of the most eminent historians of Japan in this country. Gathered together for the first time and made accessible to students and scholars, Professor Smith's essays are indispensable reading for anyone interested in Japan's remarkable history. Native Sources is a collection of seminal essays on the demographic, economic, and social history of Tokugawa and modern Japan by one of the most eminent historians of Japan in this country. Gathered together for the first time and made accessible to students and scholars, Professor Smith's essays are indispensable reading for anyone interested in Japan's remarkable history.