@misc{indiciaeecdf966cb24d,
  title = {Correspondence : Hayden (Ferdinand) and Engelmann (George), 1850-1874 — Illustration, 1861 2 / Jun 20},
  year = {1861},
  url = {https://www.biodiversitylibrary.org/page/43518819},
  note = {Source identifier: page-43518819}
}