@misc{indiciae76a2d389e7a8,
  title = {Map of Safford Valley, Graham County, Arizona, showing location of irrigation wells as of August 30, 1952},
  author = {L.C. Halpenny},
  year = {1952},
  doi = {10.3133/ofr5269},
  url = {https://pubs.usgs.gov/publication/ofr5269},
  note = {Source identifier: ofr5269}
}