Whispers of Angels: A Story of the Underground Railroad (2002)

Defiant, brave and free, the great abolitionists Thomas Garrett, William Still and Harriet Tubman, along with hundreds of lesser known and nameless opponents of slavery, formed a Corridor of Courage stretching from Maryland's eastern shore through the length of Delaware to Philadelphia and beyond -- making the Underground Railroad a real route to freedom for enslaved Americans before the Civil War.