YORK: The Forgotten Hero of the Lewis and Clark Expedition

Aunt Clara Brown: The Story of the Rockies

WILLIAM ALEXANDER — The General Who Sacrificed Everything

SIMON NOLLES — The Forgotten Soldier of 1781

SAMUEL WHITTEMORE: The 78-Year-Old Who Defied an Empire

John Laurens: The Forgotten Founding Father

HERCULES MULLIGAN: The Spy Who Saved Washington Twice

CATO: The Enslaved Spy Who Saved George Washington

SETH WARNER — The Forgotten Hero of the Green Mountain Boys

JOHN GLOVER: The Fisherman Who Saved the Revolution

JOSHUA NORTON: The Only Emperor of the United States

Why is the Statue of Liberty’s Torch Still Off-Limits?

WEIRUM, PA: The Million-Dollar Town Erased by Science

YELLOW SPRINGS, PA: The Town With Five Lives

WILSONVILLE, Pennsylvania — The Ghost Town Beneath the Lake

WHISKEY RUN, PA: The Company Town Reclaimed by Nature

BASS REEVES: The Lawman Who Arrested 3,000 Outlaws

PETER FRANCISCO — The Giant of the American Revolution

Robert Smalls: The Slave Who Became a Captain

JAMES ARMISTEAD: The Spy Who Won the Revolution

Salem Poor: The Forgotten Hero of Bunker Hill

SYBIL LUDINGTON, New York — The Teenage Hero Who Outrode Paul Revere

STAGECOACH MARY: The First Black Woman of the Mail

CATHAY WILLIAMS — The Only Female Buffalo Soldier in History

Scott Township, Pennsylvania — The Story of Rural Endurance

The Town Erased by Science: The Mystery of Straight, PA

STRINGTOWN, Pennsylvania — The Coal Town That Vanished

KINZUA, Pennsylvania — The Broken Treaty and the Lost Giant

SOMERFIELD, Pennsylvania — The Town Lost Beneath the Lake

SCOTIA, Pennsylvania — The Billionaire’s Ghost Town

REVELTON, Pennsylvania — The Railroad Town That Vanished

RICKETTS, Pennsylvania — The Mountain Empire That Disappeared

RAUSCH GAP, Pennsylvania — The Railroad Town That Vanished

QUAKER BRIDGE, PA: The 150-Year-Old Town Beneath the Lake

Port Kennedy, PA: The Town Swallowed by History

ALLEGHENY FOREST, Pennsylvania — Finding the Hidden Relics

RATTLING RUN, Pennsylvania — The Mining Town That Vanished

Port Perry, Pennsylvania — The Lost Community Under the Rails

POWELTON, Pennsylvania — The Mining Town That Refused to Vanish

PO MILLS, Pennsylvania — The Logging Town That Vanished

PO MILLS, Pennsylvania — The Logging Town That Vanished

PITHOLE, Pennsylvania — The 500-Day City That Vanished

Pig’s Ear, Pennsylvania — The Forgotten Town of the Allegheny

PETROLEUM CENTER, Pennsylvania — The Oil Town That Vanished

PEELE, Pennsylvania — The Coal Town That Time Forgot

Deep in the Poconos: The Mystery of Parker's Glenn

PANDEMONIA, Pennsylvania — The Mining Town That Vanished

OLEANA, Pennsylvania — The "New Norway" That Vanished

ENTRIKEN, Pennsylvania — The Town Lost Beneath the Lake

1.1 Million Acres of Secrets: What Happened at Ong's Hat?

2,400 People vs. 160,000 Soldiers: The Gettysburg Survival Story

NORWICH, Pennsylvania — The Town That Time Forgot

Mountain Springs, Pennsylvania — The Lost Town of Pennsylvania

Morrison Town, Pennsylvania — The Forgotten Mountain Town

McKinley, Pennsylvania — The Forgotten Coal Mining Town

McIntyre, Pennsylvania — The Coal Town That Time Forgot

Masten, Pennsylvania — The Logging Town That Disappeared

Loleta, Pennsylvania — The Forgotten Logging Town

Livermore, Pennsylvania — The Town Lost Beneath a Lake

Lausanne, Pennsylvania — The Forgotten Canal Town