@misc{indiciae9e4af09430dd,
  title = {Albers conic equal-area fifty-state base map of the United States},
  author = {Tau Rho Alpha},
  year = {1983},
  doi = {10.3133/ofr83850},
  url = {https://pubs.usgs.gov/publication/ofr83850},
  note = {Source identifier: ofr83850}
}