@misc{indiciaef02496f24d8f,
  title = {Preliminary map of Block Island, Rhode Island, showing availability of ground water},
  author = {Arnold J. Hansen},
  year = {1963},
  doi = {10.3133/ofr6340},
  url = {https://pubs.usgs.gov/publication/ofr6340},
  note = {Source identifier: ofr6340}
}