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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 Harmony

 
Clickable Map of San Luis Obispo 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 San Luis Obispo County, CA (141) Kern County, CA (390) Kings County, CA (8) Monterey County, CA (284) Santa Barbara County, CA (185)  SanLuisObispoCounty(141) San Luis Obispo County (141)  KernCounty(390) Kern County (390)  KingsCounty(8) Kings County (8)  MontereyCounty(284) Monterey County (284)  SantaBarbaraCounty(185) Santa Barbara County (185)
San Luis Obispo is the county seat for San Luis Obispo County
Harmony is in San Luis Obispo County
San Luis Obispo County (141)  ►
ADJACENT TO SAN LUIS OBISPO COUNTY
Kern County (390)  ►
Kings County (8)  ►
Monterey County (284)  ►
Santa Barbara County (185)  ►
 
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1 ► California, San Luis Obispo County, Harmony — Detroit Industrial Vehicle Company —
On Old Creamery Road west of Harmony Valley Road, on the left when traveling north.
2 ► California, San Luis Obispo County, Harmony — The Town of Harmony —
On Old Creamery Road west of Harmony Valley Road, on the right when traveling west.
 
 
  
  
  
 
 
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Nov. 11, 2026