1860. Mitchell, S. Augustus (Samuel Augustus), 1792-1868. Prime meridians: Greenwich, Washington. Imprint from copyright statement. Scale approximately 1:2,281,000. Approximately 1 inch to 38 miles. S. Augustus Mitchell.
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1837. Mitchell, S. Augustus (Samuel Augustus), 1792-1868 and Young, J. H. (James Hamilton). Sold by Mitchell & Hinman...;Falls of Ohio;Includes table of "Steam boat routes."; Vicinity of Detroit;Lead region east of the Mississippi River.; ... S. Augustus Mitchell (Philadelphia), c1834.