Bloody Dawn

The Christiana Riot and Racial Violence in the Antebellum North

1991

Exploring Lewis and Clark

Reflections on Men and Wilderness

2003

Independence

The Tangled Roots of the American Revolution

2014

The Beautiful Soul of John Woolman, Apostle of Abolition

2008

The Natures of John and William Bartram

1996

The Sewards of New York

A Biography of a Leading American Political Family

2025

The Whiskey Rebellion

Frontier Epilogue to the American Revolution

1986