@misc{indiciaefad744bb9050,
  title = {Historic trail maps of the Sterling 1° x 2° quadrangle, northeastern Colorado},
  author = {G. R. Scott},
  year = {1989},
  doi = {10.3133/i1894},
  url = {https://pubs.usgs.gov/publication/i1894},
  note = {Source identifier: i1894}
}