THE HISTORICAL
MARKER DATABASE
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Historical Markers and War Memorials in Seneca, Illinois

 
Clickable Map of LaSalle 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 LaSalle County, IL (105) Bureau County, IL (43) DeKalb County, IL (69) Grundy County, IL (19) Kendall County, IL (29) Lee County, IL (53) Livingston County, IL (49) Marshall County, IL (12) Putnam County, IL (6) Woodford County, IL (11)  LaSalleCounty(105) LaSalle County (105)  BureauCounty(43) Bureau County (43)  DeKalbCounty(69) DeKalb County (69)  GrundyCounty(19) Grundy County (19)  KendallCounty(29) Kendall County (29)  LeeCounty(53) Lee County (53)  LivingstonCounty(49) Livingston County (49)  MarshallCounty(12) Marshall County (12)  PutnamCounty(6) Putnam County (6)  WoodfordCounty(11) Woodford County (11)
Ottawa is the county seat for LaSalle County
Seneca is in LaSalle County
LaSalle County (105)  ►
ADJACENT TO LASALLE COUNTY
Bureau County (43)  ►
DeKalb County (69)  ►
Grundy County (19)  ►
Kendall County (29)  ►
Lee County (53)  ►
Livingston County (49)  ►
Marshall County (12)  ►
Putnam County (6)  ►
Woodford County (11)  ►
 
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1 ► Illinois, LaSalle County, Seneca — Landing Ship Tank Memorial —
[Left] In remembrance of the patriotism and dedication of the workers of the Chicago Bridge and Iron Company [Center] LST Landing Ship Tank This monument is dedicated to the 27,000 employees who worked to construct the . . . — — Map (db m239315) WM
2 ► Illinois, LaSalle County, Seneca — Waterways that Built Chicago —
You are walking in the footsteps of people who have traveled this passageway for centuries. Native Americans first used the waterways for trade. They showed their routes to French explorers, the first to dream of building a canal. From . . . — — Map (db m239324) HM
 
 
  
  
  
 
 
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Oct. 18, 2026