@misc{indiciae12ec9d54a8f1,
  title = {Route near the thirty-fifth parallel explored by Lieutenant A.W. Whipple, Topographical Engineers, in 1853 and 1854 — Illustration, Plate IV},
  year = {1856},
  url = {https://www.biodiversitylibrary.org/page/29094888},
  note = {Source identifier: page-29094888}
}