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MARKER DATABASE
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Historical Markers in Aberdeen Proving Ground

 
Clickable Map of Harford County, Maryland 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 Harford County, MD (222) Baltimore County, MD (386) Cecil County, MD (208) Kent County, MD (141) Lancaster County, PA (625) York County, PA (503)  HarfordCounty(222) Harford County (222)  BaltimoreCounty(386) Baltimore County (386)  CecilCounty(208) Cecil County (208)  KentCounty(141) Kent County (141)  LancasterCountyPennsylvania(625) Lancaster County (625)  YorkCounty(503) York County (503)
Bel Air is the county seat for Harford County
Aberdeen Proving Ground is in Harford County
Harford County (222)  ►
ADJACENT TO HARFORD COUNTY
Baltimore County (386)  ►
Cecil County (208)  ►
Kent County (141)  ►
Lancaster County, Pennsylvania (625)  ►
York County, Pennsylvania (503)  ►
 
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1 ► Maryland, Harford County, Aberdeen Proving Ground — Site of Old Baltimore — c. 1670 —
Here beside Bush River was county seat of Baltimore County, then largely wilderness including what is now Harford County. By 1676 Courthouse had been built. About ¼ mile south of surviving cemetery of Phillips family. (Here is buried Martha Paca . . . — — Map (db m149109) HM
2 ► Maryland, Harford County, Aberdeen Proving Ground — Spesutia Island —
The name is derived from the Latin for Utie's Hope, a 2,300-acre manorial grant in 1661 to Col. Nathaniel Utie, for whom this island was surveyed in 1658. Settling here from Virginia, Utie traded with the Indians, became a member of the Maryland . . . — — Map (db m4707) HM
 
 
  
  
  
 
 
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Nov. 12, 2026