Historical topographic quadrangles of Indiana, Iowa, Kentucky, Michigan, Missouri, Wisconsin held by the Illinois State Library.
APA Citation
Illinois State Library. (1998). Historical topographic quadrangles of Indiana, Iowa, Kentucky, Michigan, Missouri, Wisconsin held by the Illinois State Library. [Springfield, Ill.]: The Library.
MLA Citation
Illinois State Library. Historical Topographic Quadrangles of Indiana, Iowa, Kentucky, Michigan, Missouri, Wisconsin Held by the Illinois State Library. [Springfield, Ill.]: The Library, 1998.
Warning: These citations may not always be complete (especially for serials).