@misc{indiciae07cddc6be706,
  title = {Route near the thirty-fifth parallel explored by Lieutenant A.W. Whipple, Topographical Engineers, in 1853 and 1854 — Illustration, Plate XXIII},
  year = {1856},
  url = {https://www.biodiversitylibrary.org/page/29094907},
  note = {Source identifier: page-29094907}
}