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THE HISTORICAL
MARKER DATABASE
“Bite-Size Bits of Local, National, and Global History”
 
 
 
 
 
 
2 entries match your criteria.  

 
 

Historical Markers in Thermal

 
Clickable Map of Riverside County, California 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 Riverside County, CA (365) Imperial County, CA (53) Orange County, CA (533) San Bernardino County, CA (454) San Diego County, CA (539) La Paz County, AZ (33)  RiversideCounty(365) Riverside County (365)  ImperialCounty(53) Imperial County (53)  (533) Orange County (533)  SanBernardinoCounty(454) San Bernardino County (454)  SanDiegoCounty(539) San Diego County (539)  LaPazCountyArizona(33) La Paz County (33)
Riverside is the county seat for Riverside County
Thermal is in Riverside County
Riverside County (365)  ►
ADJACENT TO RIVERSIDE COUNTY
Imperial County (53)  ►
Orange County (533)  ►
San Bernardino County (454)  ►
San Diego County (539)  ►
La Paz County, Arizona (33)  ►
 
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1 ► California, Riverside County, Thermal — Jacqueline Cochran — First Woman to Break the Sound Barrier —
2 ► California, Riverside County, Thermal — RIV-042 — Martinez Indian Agency —
 
 
  
  
  
 
 
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Nov. 11, 2026