No ballads, but a lot of information on the underground railroad. At American Memory, on line, or directly from Univ. Michigan website, www.hti.umich.edu/cgi/t/text/text-idx?c=moa;idno=ABT8668: Levi Coffin
"Reminiscences of Levi Coffin, the reputed president of the underground railroad...." Western Tract Society, 1876, 712 pp. Cincinnati. He was a member of the Society of Friends (Quakers).