283 M. Survey’d, give or take a few

John Mitchell’s monumental 1755 map of North America has a curious annotation in the North Carolina Piedmont. About 15 miles southwest of present-day Salisbury, one sees “283 M. Survey’d”. So what 283 miles were surveyed?

238 mile marker of the Granville Line survey on John Mitchell’s 1755 map of North America.

Continue reading