And then September 2019 happened.
When the Trump impeachment inquiry began, Heather saw something she recognized from her years studying the 1850s and 1860s: confusion masquerading as crisis, and people desperate for someone to explain what was actually happening.
So she wrote a post.
Not an op-ed. Not a hot take. Just a clear explanation of what had occurred that day, placed in the context of American history.
It went viral.
People shared it with friends, family, coworkers. They said things like: “Finally, someone who makes sense.” “This is the first thing I’ve read that doesn’t make me want to scream.”
Heather realized people weren’t looking for more noise. They were looking for signal.
So she kept writing.
Eventually, Heather moved her writing to Substack, a newsletter platform, and launched “Letters from an American.”
The concept was simple: every night, she would write about 1,200 words explaining the day’s political events through the lens of history.
Instead of shouting about the crisis of the moment, she slowed everything down.
She showed readers how similar fears had appeared in the 1850s, when the country was splitting over slavery. In the 1930s, when democracies across Europe collapsed into authoritarianism. In the 1890s, when wealth inequality and political corruption threatened the republic.
She wrote about the people who lived through those times—people who felt exactly as anxious and powerless as many Americans feel today.
And she reminded readers of something crucial: those people made choices. Some gave up. Some fought back. And the choices they made shaped the country we inherited.
Her message wasn’t comfort. It was perspective.
And people were starving for it.
Within a year, her newsletter exploded. Hundreds of thousands of subscribers became a million. Then two million. Now 2.6 million on Substack alone, plus 3.2 million followers.
To understand how remarkable this is: The New York Times has about 10 million subscribers—and they employ thousands of journalists.
Heather is one historian with a laptop.
Why People Trust Her
The reason for her success isn’t celebrity or clickbait.
It’s tone.
Heather doesn’t panic. She doesn’t scream. She doesn’t try to terrify people into reading.
She explains.
She tells readers how demagogues throughout history used fear and anger to gain power. But she also tells stories about the people who resisted them.
The mothers who marched for voting rights.
The workers who organized for fair treatment.
The young activists who stood up for civil rights.
History, she reminds readers, was never changed by heroes alone. It was changed by ordinary people who refused to disappear.
And that’s a choice available to everyone.
The 1859 Lesson
One of Heather’s most powerful historical reflections takes readers back to 1859.
Imagine a quiet American home. A mother folds laundry. A father reads by candlelight. Children laugh in the next room.
Outside, something dark is growing.
Neighbors no longer speak to each other. Families avoid political conversations. Communities fracture into bitter camps.
Everyone feels the tension. Everyone senses something is wrong.
But many people tell themselves: Surely it won’t get worse.
Two years later, the Civil War erupted. More than 600,000 Americans died.
For Heather, studying those years carries emotional weight. Because when you read letters from ordinary people in the past, you see the moments when things might have changed. Moments when courage could have spoken louder. Moments when silence won instead.
That knowledge could create despair.
But Heather refuses to surrender to hopelessness.
Instead, she tells her readers something powerful: The past is finished. The ink is dry. But the future is still blank.
Unlike the families of 1859, we are not blind to what history can become. We know what happens when hatred spreads unchecked. We know what happens when people give up on democracy.
And because we know, we have the chance to choose differently.
Despite her national influence—interviews with President Biden, appearances on major podcasts, recognition as a USA Today Woman of the Year—Heather has not moved to Washington or New York.
She still lives on the Maine coast where her ancestors settled more than two centuries ago.
In September 2022, she married Buddy Poland, a lobsterman and photographer. She has three children from a previous marriage.
On quiet mornings when she isn’t teaching or writing, Heather walks along the rocky shoreline. Sometimes she swims near a harbor rock named after her grandmother, who learned to swim there over a century ago.
Living in that place reminds her that history is not abstract. It is personal. The people of the past were ordinary human beings trying to survive uncertain times.
Just like us.
Every Night, the Same Ritual
Every evening, after finishing her work at Boston College, Heather returns home and reads the day’s news.
She watches political debates. She studies policy decisions. She searches for the deeper patterns hiding beneath the noise.
Then, often past midnight, she begins to write.
Outside, the ocean is dark and endless.
Inside, her words take shape.
By morning, millions of people will read them.
Teachers in Chicago. Retirees in Arizona. College students in California. Parents drinking coffee before work.
People who feel frightened. People who feel exhausted. People who need someone to remind them that history is bigger than today’s headlines.
