The dissertation is a study of the service industries in the United States during the period 1839 through 1899. The primary purpose of the study is to provide three series relating to the quantitative development of the sector. These series—value-added, gainful workers, and capital stock—provide benchmark estimates at decade intervals centered on census years. Series are presented for the aggregate sector; the major components, final and intermediate services; and eight industries. These eight industries, defined as the service sector, are trade, transportation and public utilities, finance and insurance, professional services, personal services, government, education, and the independent hand trades.