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4 entries match your criteria.  

 
 

Historical Markers in Henderson County

 
Clickable Map of Henderson County, Illinois and Immediately Adjacent Jurisdictions image/svg+xml 2019-10-06 U.S. Census Bureau, Abe.suleiman; Lokal_Profil; HMdb.org; J.J.Prats/dc:title> https://commons.wikimedia.org/wiki/File:Usa_counties_large.svg Henderson County, IL (4) Hancock County, IL (71) McDonough County, IL (16) Mercer County, IL (18) Warren County, IL (8) Des Moines County, IA (10) Lee County, IA (53)  HendersonCounty(4) Henderson County (4)  HancockCounty(71) Hancock County (71)  McDonoughCounty(16) McDonough County (16)  MercerCounty(18) Mercer County (18)  WarrenCounty(8) Warren County (8)  DesMoinesCountyIowa(10) Des Moines County (10)  LeeCounty(53) Lee County (53)
Oquawka is the county seat for Henderson County
Adjacent to Henderson County, Illinois
Hancock County (71)  ►
McDonough County (16)  ►
Mercer County (18)  ►
Warren County (8)  ►
Des Moines County, Iowa (10)  ►
Lee County, Iowa (53)  ►
 
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1 ► Illinois, Henderson County, Dallas City — Lincoln Spoke Here — October 23, 1858 —
2 ► Illinois, Henderson County, Dallas City — Politics and Lincoln — Looking for Lincoln — 1858 —
3 ► Illinois, Henderson County, Gladstone — Henderson County Covered Bridge —
4 ► Illinois, Henderson County, Oquawka — Norma Jean Elephant — Aug. 10, 1942 - July 17, 1972 —
 
 
  
 
 
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Nov. 10, 2026