Historical marker in Washington Boro, PA showing the 40th parallel.
A marker noting the parallel 40° north, which formed the original northern boundary of the British Colony of Maryland. A subsequent grant made the Colony of Pennsylvania's border unclear. The Mason–Dixon Line was drawn between 1763 and 1767 as the compromise boundary.
Size: 3267px × 4900px
Photo credit: © George Sheldon / Alamy / Afripics
License: Royalty Free
Model Released: No
Keywords: 40th, boro, county, dixon, historical, lancaster, line, marker, maryland, mason, parallel, pennsylvania, river, susquehanna, washington
