Fogel, Robert William. Railroads and American economic growth essays in econometric history by Robert William Fogel. - Baltimore Johns Hopkins Press [1964] - xv, 296 p. illus., maps (1 fold.). Bibliography: p. 263-285. LCCN: 91050885 Subjects--Topical Terms: Railroads--History.--United States Subjects--Geographic Terms: United States--Economic conditions. LC Class. No.: HE2751 / .F65 Dewey Class. No.: 385.0973