@misc{indiciae8e63d25d9435,
  title = {Processed 1938 aerial photography for selected areas of the lower Colorado River, southwestern United States},
  author = {Laura M. Norman and Michael Gishey and Leila Gass and Brian Yanites and Edwin Pfeifer and Ron Simms and Ray Ahlbrandt},
  year = {2006},
  doi = {10.3133/ofr20061141},
  url = {https://pubs.usgs.gov/publication/ofr20061141},
  note = {Source identifier: ofr20061141}
}