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 (University of Michigan)) 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.
Mode of access: World Wide Web.
Reports of the chief engineer 1870-71.--On levees. Discussions.--The Delta of the Mississippi, by J.G. Barnard.--Upright arched bridges, by J.B. Eads.--Discussions