A larger, higher quality image can be found at The Library of Congress Geography and Map Division

Bird's eye view of the city of Marengo, Iowa Co., Iowa 1868. Drawn by A. Ruger.
Created/Published: Chicago, Merchants Lithographing Co. [1868]

From the Library of Congress Geography and Map Division, a.ka., Library of Congress American Memories. See Copyright and Restrictions at this link. Resized and manipulated for this site by Stephen D. Williams 2005.