Underground Railroad / Slavery
- Pathway to Freedom — Maryland and the Underground Railroad
- The Underground Railroad — by National Geographic
- Geography of Slavery in Virginia
- Abolition, Anti-Slavery, and the Underground Railroad — Historical Society of Pa
- Voices from the Days of Slaves — Library of Congress
- The Underground Railroad: Escape from Slavery — Scholastic
- Underground Railroad Digital Classroom
- Slavery and Abolition in the US
- Unraveling the Underground Railroad
- Free at Last: Slavery in Pittsburgh, Pa