Carlson, Judy Harriet Tubman: Call To Freedom. Fawcett Columbine 1989
Conrad, Earl. Harriet Tubman: Negro Soldier and Abolitionist. New York: International Publishers, 1968.
Sadlier, Rosemary. Harriet Tubman and the Underground Railroad: Her Life in the United States and Canada. Toronto: Umbrella Press, 1997.
Tobin, Jacqueline L. and Raymond G Dobard. Hidden in Plain View: A Secret Story of Quilts and the Underground Railroad. Anchor Books, 2000 (new paperback edition, with additional chapter on a secondary code)
Winks, Robin W. et al., intro. Four Fugitive Slave Narratives. Reading, Massachusetts: Addison-Wesley Publishing Company, 1969.