Example image of eyePlorer eyePlorer map for 'Underground Railroad': Abolitionism African American Safe house Slave state Slavery in the United States United States Mexico United States Census Fugitive Slave Act of 1793 Compromise of 1850 Fugitive Slave Act of 1850 Mexican–American War Bribery American Civil War Resistance during World War II Manumission Native Americans in the United States Baptist Church (building) Congregational church Reformed Presbyterian Church of North America Religious Society of Friends Wesleyan Church Plantation Fugitive Pearl incident Bounty hunter Canada – United States border Slave catcher Magistrate Replevin Writ Michigan Secession Rail transport Asterism (astronomy) Follow the Drinkin' Gourd North Star Philadelphia William Still Harrisburg, Pennsylvania Reading, Pennsylvania Quilt Children's literature Oral history Oh! Susanna Song of the Free Slavery in Canada Thirteenth Amendment to the United States Constitution Black Canadians