@article{88552,
      author = {Billington, Ray Allen,},
      url = {http://library.usi.edu/record/88552},
      title = {Westward expansion; a history of the American frontier.},
      publisher = {Macmillan},
      recid = {88552},
      pages = {xvii, 933 p.},
      address = {New York,},
      year = {1967},
}