@misc{indiciae990b8d37e559,
  title = {Memorandum on the ground-water resources at Emerald Mound, Natchez Trace Parkway, Mississippi},
  author = {F.H. Thomson},
  year = {1969},
  doi = {10.3133/ofr69280},
  url = {https://pubs.usgs.gov/publication/ofr69280},
  note = {Source identifier: ofr69280}
}