This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
Correspondence Bruhin Thomas and Engelmann George BHL. Correspondence Bruhin Thomas and Engelmann George Illustration Blank Bruhin to Engelmann biodiversitylibrary org Bruhin Thomas Permission to digitize granted by rights holder Biodiversity Heritage Library Check categories October PDold Correspondence Bruhin Thomas