Thomas, Cowperthwait & Co.(W 97°00ʹ--W 89°07ʹ/N 44°30ʹ--N 39°46ʹ). Page number in lower right corner: 35. Differs from other edition (OCLC 78771984): includes Do. proposed from Sergeants Bluff to Clayton County, Do. proposed from St. Mary's to Ottumwa. There may be additional differences.35 x 43 centimetersJPEGUMN_ALMA:9947195820001701engThomas, Cowperthwait & Co. (Philadelphia)PublicA new map of the state of Iowa.MapsIowa1850University of Minnesota