Delaware Boundary Markers

Also known as: Transpeninsular Line, Mason-Dixon Line, Tangent Line, The Arc, T
State boundary lines between DE-MD/DE-PA, Not Applicable, Delaware

Photos 

Mason - Dixon Line boundary stone Penn Arms

Photo taken by Richard Doody in January 1997

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Map 

National Register information 

Status
Posted to the National Register of Historic Places on February 18, 1975
Reference number
75002101
Areas of significance
Engineering; Politics/Government
Level of significance
State
Evaluation criteria
A - Event; C - Design/Construction
Property type
District
Historic function
Monument/marker
Current function
Monument/marker
Periods of significance
1750-1799; 1825-1849
Significant years
1763; 1849
Number of properties
Contributing sites: 94

Update Log 

  • December 13, 2018: New photos from Richard Doody

Sources