@misc{indiciaee399a9c7e1b5,
  title = {George Engelmann : botanical notebook 16 : Cactaceae manuscript — Illustration, [No.] 3540 [1] verso},
  year = {1845},
  url = {https://www.biodiversitylibrary.org/page/53325352},
  note = {Source identifier: page-53325352}
}