@misc{indiciaedeb8638a591c,
  title = {Correspondence : Gray (Asa) and Engelmann (George), 1841-1883 — Illustration, 1849 [3] insert / Oct 13},
  year = {1849},
  url = {https://www.biodiversitylibrary.org/page/42633800},
  note = {Source identifier: page-42633800}
}