King's Highway (Charleston to Boston)

It was built on the order of Charles II of England, who directed his colonial governors to link Charleston, South Carolina, and Boston, Massachusetts.

The section north of New York City, laid out on January 22, 1673, became the Upper Boston Post Road.

The Post from Boston to Pisacataway being 70 Miles leaves Letters at Ipswich, Salem, Marblehead and Newberry.

There are offices kept at Burlington, Perth Amboy in New Jersey, New London and Stommington in Connecticott, at Rhode Island, Bristol, Ipswich, Salem, Marblehead and Newberry.

In 1761, then-Postmaster General Benjamin Franklin ordered milestones placed along the 1673-established route from Boston to Saco, Maine, initially, then all the way to Machias, as a northern extension of King's Highway.

[9][10] As part of his duties, Franklin conducted inspections of the roads that were used for delivering mail as settlements along the coast increased.