@article{876554,
      note = {In portfolio.},
      author = {Johnston, John B.},
      url = {http://library.usi.edu/record/876554},
      title = {Slavery (voluntary) as it exists north, west, east and  south. [electronic resource] :},
      recid = {876554},
      pages = {14 photostats ;},
      address = {[S.l.,},
      year = {1871},
}