@article{732241,
      author = {Petersen, William John,},
      url = {http://library.usi.edu/record/732241},
      title = {Steamboating on the Upper Mississippi,},
      publisher = {State Historical Society of Iowa,},
      recid = {732241},
      pages = {575 pages},
      address = {Iowa City,},
      year = {1968},
}