Harrison Johnson Jones / Carroll Cerro Gordo Clinton Des / Taylor Van Buren Wayne Worth / Calhoun Cass Cedar / Monroe Osceola Palo Alto Pocahontas / Emmet Floyd Franklin Hamilton Hancock / Clay Clayton Crawford Delaware Dickinson Emmet / Fayette Henry Jackson Jasper / Marion Marshall Muscatine Plymouth / Taylor Van Buren Wayne / Jefferson Keokuk Kossuth Louisa Lyon / Clay Clayton Crawford Delaware / Howard Humboldt Ida / Brien Page Poweshiek / Benton Black Hawk / Buena Vista Butler / Buena Vista Butler Calhoun Cass / Clarke Davis Decatur Fremont / Lucas Monona Monroe Osceola Palo / Lee Mahaska Marion Marshall Muscatine / Fayette Henry Jackson Jasper Benton Black / Harrison Johnson / Adair Adams Audubon Clarke Davis / Boone Buchanan Carroll / Mitchell Montgomery O’Brien / Scott Story Warren Washington Woodbury / Carroll Cerro Gordo / Boone Buchanan Carroll Cerro Gordo / Louisa Lyon Mitchell Montgomery / Clarke Davis Decatur Fremont Greene Howard / / /