. Annual report of the Board of Regents of the Smithsonian Institution. Smithsonian Institution; Smithsonian Institution. Archives; Discoveries in science. 700 REPORT OF NATIONAL MUSEUM, 1889. Figs. 121,122, 123, and 124* show the variations in form of the angle bar on the Pennsylvania Railroad, 1875, 1880, and 18'.) Fig. 121. Angle Splice Bar, Pennsylvania Railroad, I87f. (From a drawing n the U. S. National Museum. ). 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
. Annual report of the Board of Regents of the Smithsonian Institution. Smithsonian Institution; Smithsonian Institution. Archives; Discoveries in science. 700 REPORT OF NATIONAL MUSEUM, 1889. Figs. 121,122, 123, and 124* show the variations in form of the angle bar on the Pennsylvania Railroad, 1875, 1880, and 18'.) Fig. 121. Angle Splice Bar, Pennsylvania Railroad, I87f. (From a drawing n the U. S. National Museum. ). 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
