@misc{indiciae91502fc8ff84,
  title = {Correspondence : Gray (Asa) and Engelmann (George), 1841-1883 — Illustration, 1873 2 / Jun 03},
  year = {1873},
  url = {https://www.biodiversitylibrary.org/page/42677278},
  note = {Source identifier: page-42677278}
}