THE HISTORICAL
MARKER DATABASE
“Bite-Size Bits of Local, National, and Global History”
 
 
 
 
 
 
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By Cosmos Mariner, July 11, 2025
Southern San Luis Valley RR D500 Marker
SHOWN IN SOURCE-SPECIFIED ORDER
1 ► Colorado, Costilla County, Blanca — Southern San Luis Valley RR D500 —
2 ► Colorado, Costilla County, Blanca — The San Luis Southern Railway —
 
 
  
  
  
 
 
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Oct. 27, 2026