On Wednesday January 08 2020, Joel Lode from France left the following message for Dieter Waldeis:
"Dear Sir, I am currently writing the 3rd volume of Taxonomy of the Cactaceae: "Description of the species" and I wonder if you could help me. As I am intenting to illustrate most of persons who gave their name to a cactus, I would be grateful to get a portrait of you to illustrate the etymology of Echinocereus waldeisii. Thank you in advance for what you can do to help my work to be as much as possible complete. Best regards, Joel Lodé"
Joel Lode left an e-mail address and a telephone number.