@misc{indiciaeebac71756cca,
  title = {Correspondence : Britton (Nathaniel) and Engelmann (George), 1879 — Illustration, 1879 1 / Jul 05},
  year = {1879},
  url = {https://www.biodiversitylibrary.org/page/42512382},
  note = {Source identifier: page-42512382}
}