@misc{indiciae308284a7028d,
  title = {Correspondence : Gray (Asa) and Engelmann (George), 1841-1883 — Illustration, 1858 1 / Jun 01},
  year = {1858},
  url = {https://www.biodiversitylibrary.org/page/42635768},
  note = {Source identifier: page-42635768}
}