@misc{indiciae94aa05f8a5ff,
  title = {George Engelmann : botanical notebook 46 : Coniferae (Pinaceae) — Illustration, [No.] 10530 verso},
  year = {1871},
  url = {https://www.biodiversitylibrary.org/page/55928481},
  note = {Source identifier: page-55928481}
}