div class=ts-pagebutton class=gotoPage data-page=1Page 1button div class=ts-imageimg data-url=bridges1914-the-baltimore-ohio-railroad-the-pratt-truss-was-flrst-introducedhtmlpage=1 data-page=1 class=ts-thumb lazyload alt=Page 1: bridges1914 - The Baltimore Ohio Railroad …The Pratt truss was fLrst introduced Ln 1844 by Caleb Pratt as a mod Of the Howe truss In this type of truss the vert Ical web members loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220422115eb3270a41db6443191e8c27html5thumbnails1jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=2Page 2button div class=ts-imageimg data-url=bridges1914-the-baltimore-ohio-railroad-the-pratt-truss-was-flrst-introducedhtmlpage=2 data-page=2 class=ts-thumb lazyload alt=Page 2: bridges1914 - The Baltimore Ohio Railroad …The Pratt truss was fLrst introduced Ln 1844 by Caleb Pratt as a mod Of the Howe truss In this type of truss the vert Ical web members loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220422115eb3270a41db6443191e8c27html5thumbnails2jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=3Page 3button div class=ts-imageimg data-url=bridges1914-the-baltimore-ohio-railroad-the-pratt-truss-was-flrst-introducedhtmlpage=3 data-page=3 class=ts-thumb lazyload alt=Page 3: bridges1914 - The Baltimore Ohio Railroad …The Pratt truss was fLrst introduced Ln 1844 by Caleb Pratt as a mod Of the Howe truss In this type of truss the vert Ical web members loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220422115eb3270a41db6443191e8c27html5thumbnails3jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=4Page 4button div class=ts-imageimg data-url=bridges1914-the-baltimore-ohio-railroad-the-pratt-truss-was-flrst-introducedhtmlpage=4 data-page=4 class=ts-thumb lazyload alt=Page 4: bridges1914 - The Baltimore Ohio Railroad …The Pratt truss was fLrst introduced Ln 1844 by Caleb Pratt as a mod Of the Howe truss In this type of truss the vert Ical web members loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220422115eb3270a41db6443191e8c27html5thumbnails4jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=5Page 5button div class=ts-imageimg data-url=bridges1914-the-baltimore-ohio-railroad-the-pratt-truss-was-flrst-introducedhtmlpage=5 data-page=5 class=ts-thumb lazyload alt=Page 5: bridges1914 - The Baltimore Ohio Railroad …The Pratt truss was fLrst introduced Ln 1844 by Caleb Pratt as a mod Of the Howe truss In this type of truss the vert Ical web members loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220422115eb3270a41db6443191e8c27html5thumbnails5jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=6Page 6button div class=ts-imageimg data-url=bridges1914-the-baltimore-ohio-railroad-the-pratt-truss-was-flrst-introducedhtmlpage=6 data-page=6 class=ts-thumb lazyload alt=Page 6: bridges1914 - The Baltimore Ohio Railroad …The Pratt truss was fLrst introduced Ln 1844 by Caleb Pratt as a mod Of the Howe truss In this type of truss the vert Ical web members loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220422115eb3270a41db6443191e8c27html5thumbnails6jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=7Page 7button div class=ts-imageimg data-url=bridges1914-the-baltimore-ohio-railroad-the-pratt-truss-was-flrst-introducedhtmlpage=7 data-page=7 class=ts-thumb lazyload alt=Page 7: bridges1914 - The Baltimore Ohio Railroad …The Pratt truss was fLrst introduced Ln 1844 by Caleb Pratt as a mod Of the Howe truss In this type of truss the vert Ical web members loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220422115eb3270a41db6443191e8c27html5thumbnails7jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=8Page 8button div class=ts-imageimg data-url=bridges1914-the-baltimore-ohio-railroad-the-pratt-truss-was-flrst-introducedhtmlpage=8 data-page=8 class=ts-thumb lazyload alt=Page 8: bridges1914 - The Baltimore Ohio Railroad …The Pratt truss was fLrst introduced Ln 1844 by Caleb Pratt as a mod Of the Howe truss In this type of truss the vert Ical web members loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220422115eb3270a41db6443191e8c27html5thumbnails8jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=9Page 9button div class=ts-imageimg data-url=bridges1914-the-baltimore-ohio-railroad-the-pratt-truss-was-flrst-introducedhtmlpage=9 data-page=9 class=ts-thumb lazyload alt=Page 9: bridges1914 - The Baltimore Ohio Railroad …The Pratt truss was fLrst introduced Ln 1844 by Caleb Pratt as a mod Of the Howe truss In this type of truss the vert Ical web members loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220422115eb3270a41db6443191e8c27html5thumbnails9jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=10Page 10button div class=ts-imageimg data-url=bridges1914-the-baltimore-ohio-railroad-the-pratt-truss-was-flrst-introducedhtmlpage=10 data-page=10 class=ts-thumb lazyload alt=Page 10: bridges1914 - The Baltimore Ohio Railroad …The Pratt truss was fLrst introduced Ln 1844 by Caleb Pratt as a mod Of the Howe truss In this type of truss the vert Ical web members loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220422115eb3270a41db6443191e8c27html5thumbnails10jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=11Page 11button div class=ts-imageimg data-url=bridges1914-the-baltimore-ohio-railroad-the-pratt-truss-was-flrst-introducedhtmlpage=11 data-page=11 class=ts-thumb lazyload alt=Page 11: bridges1914 - The Baltimore Ohio Railroad …The Pratt truss was fLrst introduced Ln 1844 by Caleb Pratt as a mod Of the Howe truss In this type of truss the vert Ical web members loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220422115eb3270a41db6443191e8c27html5thumbnails11jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=12Page 12button div class=ts-imageimg data-url=bridges1914-the-baltimore-ohio-railroad-the-pratt-truss-was-flrst-introducedhtmlpage=12 data-page=12 class=ts-thumb lazyload alt=Page 12: bridges1914 - The Baltimore Ohio Railroad …The Pratt truss was fLrst introduced Ln 1844 by Caleb Pratt as a mod Of the Howe truss In this type of truss the vert Ical web members loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220422115eb3270a41db6443191e8c27html5thumbnails12jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=13Page 13button div class=ts-imageimg data-url=bridges1914-the-baltimore-ohio-railroad-the-pratt-truss-was-flrst-introducedhtmlpage=13 data-page=13 class=ts-thumb lazyload alt=Page 13: bridges1914 - The Baltimore Ohio Railroad …The Pratt truss was fLrst introduced Ln 1844 by Caleb Pratt as a mod Of the Howe truss In this type of truss the vert Ical web members loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220422115eb3270a41db6443191e8c27html5thumbnails13jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=14Page 14button div class=ts-imageimg data-url=bridges1914-the-baltimore-ohio-railroad-the-pratt-truss-was-flrst-introducedhtmlpage=14 data-page=14 class=ts-thumb lazyload alt=Page 14: bridges1914 - The Baltimore Ohio Railroad …The Pratt truss was fLrst introduced Ln 1844 by Caleb Pratt as a mod Of the Howe truss In this type of truss the vert Ical web members loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220422115eb3270a41db6443191e8c27html5thumbnails14jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=15Page 15button div class=ts-imageimg data-url=bridges1914-the-baltimore-ohio-railroad-the-pratt-truss-was-flrst-introducedhtmlpage=15 data-page=15 class=ts-thumb lazyload alt=Page 15: bridges1914 - The Baltimore Ohio Railroad …The Pratt truss was fLrst introduced Ln 1844 by Caleb Pratt as a mod Of the Howe truss In this type of truss the vert Ical web members loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220422115eb3270a41db6443191e8c27html5thumbnails15jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=16Page 16button div class=ts-imageimg data-url=bridges1914-the-baltimore-ohio-railroad-the-pratt-truss-was-flrst-introducedhtmlpage=16 data-page=16 class=ts-thumb lazyload alt=Page 16: bridges1914 - The Baltimore Ohio Railroad …The Pratt truss was fLrst introduced Ln 1844 by Caleb Pratt as a mod Of the Howe truss In this type of truss the vert Ical web members loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220422115eb3270a41db6443191e8c27html5thumbnails16jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=17Page 17button div class=ts-imageimg data-url=bridges1914-the-baltimore-ohio-railroad-the-pratt-truss-was-flrst-introducedhtmlpage=17 data-page=17 class=ts-thumb lazyload alt=Page 17: bridges1914 - The Baltimore Ohio Railroad …The Pratt truss was fLrst introduced Ln 1844 by Caleb Pratt as a mod Of the Howe truss In this type of truss the vert Ical web members loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220422115eb3270a41db6443191e8c27html5thumbnails17jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=18Page 18button div class=ts-imageimg data-url=bridges1914-the-baltimore-ohio-railroad-the-pratt-truss-was-flrst-introducedhtmlpage=18 data-page=18 class=ts-thumb lazyload alt=Page 18: bridges1914 - The Baltimore Ohio Railroad …The Pratt truss was fLrst introduced Ln 1844 by Caleb Pratt as a mod Of the Howe truss In this type of truss the vert Ical web members loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220422115eb3270a41db6443191e8c27html5thumbnails18jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=19Page 19button div class=ts-imageimg data-url=bridges1914-the-baltimore-ohio-railroad-the-pratt-truss-was-flrst-introducedhtmlpage=19 data-page=19 class=ts-thumb lazyload alt=Page 19: bridges1914 - The Baltimore Ohio Railroad …The Pratt truss was fLrst introduced Ln 1844 by Caleb Pratt as a mod Of the Howe truss In this type of truss the vert Ical web members loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220422115eb3270a41db6443191e8c27html5thumbnails19jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=20Page 20button div class=ts-imageimg data-url=bridges1914-the-baltimore-ohio-railroad-the-pratt-truss-was-flrst-introducedhtmlpage=20 data-page=20 class=ts-thumb lazyload alt=Page 20: bridges1914 - The Baltimore Ohio Railroad …The Pratt truss was fLrst introduced Ln 1844 by Caleb Pratt as a mod Of the Howe truss In this type of truss the vert Ical web members loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220422115eb3270a41db6443191e8c27html5thumbnails20jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=21Page 21button div class=ts-imageimg data-url=bridges1914-the-baltimore-ohio-railroad-the-pratt-truss-was-flrst-introducedhtmlpage=21 data-page=21 class=ts-thumb lazyload alt=Page 21: bridges1914 - The Baltimore Ohio Railroad …The Pratt truss was fLrst introduced Ln 1844 by Caleb Pratt as a mod Of the Howe truss In this type of truss the vert Ical web members loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220422115eb3270a41db6443191e8c27html5thumbnails21jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=22Page 22button div class=ts-imageimg data-url=bridges1914-the-baltimore-ohio-railroad-the-pratt-truss-was-flrst-introducedhtmlpage=22 data-page=22 class=ts-thumb lazyload alt=Page 22: bridges1914 - The Baltimore Ohio Railroad …The Pratt truss was fLrst introduced Ln 1844 by Caleb Pratt as a mod Of the Howe truss In this type of truss the vert Ical web members loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentinreader034viewer20220422115eb3270a41db6443191e8c27html5thumbnails22jpg width=140 height=200 divdiv
