Digital Archive - Report upon the Colorado River of the West explored in 1857 and 1858 by Lieutenant Joseph C. Ives, etc., U.S. Geological Survey, Open-File Report 02-25, 2002, (CD-ROM)
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Digital Archive - Report upon the Colorado River of the West explored in 1857 and 1858 by Lieutenant Joseph C. Ives, etc., U.S. Geological Survey, Open-File Report 02-25, 2002, (CD-ROM)