@article{1416053,
      author = {Snodgrass, Mary Ellen.},
      url = {http://library.usi.edu/record/1416053},
      title = {The Underground Railroad : an encyclopedia of people,  places, and operations /},
      publisher = {M.E. Sharpe,},
      recid = {1416053},
      pages = {1 online resource (1542 entries) :},
      address = {Armonk, N.Y. :},
      year = {2008},
}