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  1. Cresap's War - Wikipedia

  2. Towns on the Maryland / Pennsylvania border - State Distance

  3. Mason–Dixon line - Wikipedia

  4. Our Most Famous Border: The Mason-Dixon Line | Pennsylvania

  5. Where does Pennsylvania and Maryland meet? - Geographic …

  6. This Long, Violent Border Dispute Between Colonial Maryland

  7. Mason-Dixon Line | Definition, Significance, & Facts | Britannica

  8. History of the Mason-Dixon Line - Town of Rising Sun, Maryland

  9. Cost of living in Maryland (US) compared to Pennsylvania (US)

  10. History of Pennsylvania - Wikipedia