In the 1850s, Douglass was involved with the Underground Railroad, the system set up by antislavery groups to bring runaway slaves to the North and Canada.

• 19世纪50年代，道格拉斯参与“地下铁道”，其为由各反奴隶制团组建立的一个体系，将逃跑的奴隶输送到（美国）北方和加拿大。