@misc{indiciae69be9e941269,
  title = {The 3D Elevation Program: summary for Illinois},
  author = {William J. Carswell},
  year = {2014},
  doi = {10.3133/fs20143086},
  url = {https://pubs.usgs.gov/publication/fs20143086},
  note = {Source identifier: fs20143086}
}