@misc{indiciae8077614cc12a,
  title = {EAARL Topography-Vicksburg National Military Park 2007: First Surface},
  author = {Amar Nayegandhi and John Brock and C. Wayne Wright and Martha Segura and Xan Yates},
  year = {2009},
  doi = {10.3133/ds388},
  url = {https://pubs.usgs.gov/publication/ds388},
  note = {Source identifier: ds388}
}