@misc{indiciae2be03fd2b606,
  title = {Map of the territory of the United States from the Mississippi to the Pacific Ocean; ordered by Jeff'n Davis, Secretary of War to accompany the reports of the explorations for a railroad route},
  author = {united states. war department and warren, g. k. (gouverneur kemble) and siebert, selmar},
  year = {1858},
  url = {https://www.loc.gov/item/76695825/},
  note = {Source identifier: 76695825}
}