@misc{indiciaee9a1e2a4995f,
  title = {George Engelmann : botanical notebook 7 : Echinocactus, Echinopsis, and Cereus — Illustration, [No.] 1674},
  url = {https://www.biodiversitylibrary.org/page/56141668},
  note = {Source identifier: page-56141668}
}