Historical topographic quadrangles of :
Indiana, Iowa, Kentucky, Michigan, Missouri, Wisconsin held by the Illinois State Library.
APA Citation
Illinois State Library. (1992). Historical topographic quadrangles of: Indiana, Iowa, Kentucky, Michigan, Missouri, Wisconsin held by the Illinois State Library. [Springfield, Ill.]: Illinois State Library.
MLA Citation
Illinois State Library. Historical Topographic Quadrangles Of: Indiana, Iowa, Kentucky, Michigan, Missouri, Wisconsin Held by the Illinois State Library. [Springfield, Ill.]: Illinois State Library, 1992.
Warning: These citations may not always be complete (especially for serials).