@misc{indiciae99b54d1abfde,
  title = {Map of the territory of the United States from the Mississippi River to the Pacific Ocean; originally prepared to accompany the reports of the explorations for a Pacific railroad route},
  author = {warren, g. k. (gouverneur kemble) and bien, julius and united states. war department},
  year = {1867},
  url = {https://www.loc.gov/item/76695672/},
  note = {Source identifier: 76695672}
}