@misc{indiciae4ee674859441,
  title = {Correspondence : Gray (Asa) and Engelmann (George), 1841-1883 — Illustration, Jun 30 / 1870 2},
  year = {1870},
  url = {https://www.biodiversitylibrary.org/page/42720075},
  note = {Source identifier: page-42720075}
}