@misc{indiciae05e59299129d,
  title = {Correspondence : Gray (Asa) and Engelmann (George), 1841-1883 — Illustration, 1856 2 / Jun 04},
  year = {1856},
  url = {https://www.biodiversitylibrary.org/page/42635724},
  note = {Source identifier: page-42635724}
}