Who Needs the Mason-Dixon Line?

Who Needs the Mason-Dixon Line?

In reading about Pennsylvania, as I have been doing a lot lately, I have come across many references to the Mason-Dixon line, the southern boundary of the colony and eventually the state. We’re all familiar with the Mason-Dixon line, of course. It has served as a powerful symbol of the division between the free North and the slaveholding South, the line enslaved people had to cross to escape to freedom. Despite that knowledge, it had never before occurred to me to wonder why the Mason-Dixon line exists at all. It’s quite a story, involving royal patronage, feuding families, a minor war, a famous lawsuit, and some cutting-edge science.

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The Motherlode of Erismans
Journeys to the Unknown, Radical Ideas Wendy Erisman Journeys to the Unknown, Radical Ideas Wendy Erisman

The Motherlode of Erismans

I have an unusual last name. For much of my life, I never met anyone named Erisman to whom I wasn’t closely related, close enough that we could easily calculate what flavor of cousin we were. Some years back, however, while visiting Lancaster County, Pennsylvania, on a business trip, I was suddenly inundated by Erismans—a colleague’s child’s kindergarten teacher, a local car dealership, the high school’s star quarterback smiling from a billboard. There were Erismans everywhere, even on a road sign. I had, I concluded, found the motherlode of Erismans.

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