. Annual report of the Board of Regents of the Smithsonian Institution. Smithsonian Institution; Smithsonian Institution. Archives; Discoveries in science. DEVELOPMENT OF THE AMERICAN RAIL AND TRACK. 691 placed in the tracks of the Penusyivania Railroad Company about a year ago. Fig. 99 illustrates a steel cross-tie* with rail fastenings, in. if. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Smithsonian Institution. Board
. Annual report of the Board of Regents of the Smithsonian Institution. Smithsonian Institution; Smithsonian Institution. Archives; Discoveries in science. DEVELOPMENT OF THE AMERICAN RAIL AND TRACK. 691 placed in the tracks of the Penusyivania Railroad Company about a year ago. Fig. 99 illustrates a steel cross-tie* with rail fastenings, in. if. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Smithsonian Institution. Board of Regents; United States National Museum. Report of the U. S. National Museum; Smithsonian Institution. Report of the Secretary. Washington : Smithsonian Institution
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Keywords: ., bookauthorsmithsonianinstitutio, bookcentury1800, bookdecade1840
