Report of John A. Roebling to the presidents and directors of the Niagara Falls Suspension and Niagara Falls International Bridge Companies, [electronic resource] on the condition of the Niagara railway suspension bridge. August 1, 1860.
Electronic text and image data. Ann Arbor, Mich. : University of Michigan, Digital Library Initiatives, 2000. Includes both TIFF files and keyword searchable text. [Making of America] This volume is made possible by a grant from the Andrew W. Mellon Foundation as part of Making of America IV: the American voice, 1850-1877.