tag:digital.library.illinois.edu,2005:/items/af741cc0-c451-0133-1d17-0050569601ca-3Keithsburg, Mercer County, Illinois, September 19132023-12-12T22:54:14Ztag:digital.library.illinois.edu,2005:Item/236272016-08-03T21:14:11Z2023-12-12T22:54:14ZKeithsburg, Mercer County, Illinois, September 1913Also shows factories, commercial occupancy of buildings, property boundaries and house and block numbers.University of Illinois at Urbana-Champaign Library