This publication presents estimates prepared by the Bureau of Economic Analysis (BEA) of the stocks and depreciation of fixed assets and consumer durable goods and of the investment flows used to derive them. Specifically, it presents estimates for the United States of the stocks of private and government fixed assets (durable equipment, software, and structures) and consumer durables for 1925–99. It also presents the underlying investment expenditures for most assets for 1901–99.