@misc{indiciaebf77c3f1b7fa,
  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 = {warren, g. k. (gouverneur kemble) and siebert, selmar and united states. war department},
  year = {1858},
  url = {https://www.loc.gov/item/76695826/},
  note = {Source identifier: 76695826}
}