. . "Observations on railroads in the Western and Southern States : and of the introduction of the pioneer system, for their construction, with remarks on the importation of foreign iron"@en . . . "Observations on rail roads, in the western & southern states" . . . "Internet resources"@en . . . . . . . "Observations on rail roads, in the western & southern states : and of the introduction of the pioneer system, for their construction : with remarks on the importation of foreign iron"@en . . . "Observations on railroads in the western and southern states, and of the introduction of the pioneer system, for their construction, with remarks on the importation of foreign iron"@en . . . . . "Electronic books"@en . "Observations on rail roads, in the western & southern states and of the introduction of the pioneer system, for their construction : with remarks on the importation of foreign iron" . "Observations on railroads in the Western and Southern States, and of the introduction of the pioneer system, for their construction, with remarks on the importation of foreign iron" . "Observations on rail roads, in the western & southern states and of the introduction of the pioneer system, for their construction : with remarks on the importation of foreign iron"@en . . . . . . . "Railroad rails." . . "Pacific railroads." . . "Railroads Ohio Cincinnati." . . "Railroads United States." . . "Chronicle & Atlas Book and Job Rooms." . . "Railroads Design and construction." . .