@article{DA,
      author = {Cheryl Herrmann},
      url = {http://library.usi.edu/record/1537781},
      title = {Descendants of Peter Helfert},
      publisher = {University of Southern Indiana},
      abstract = {Helfert family history},
      number = {DA},
      recid = {1537781},
      address = {2020},
}