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 Andras John and Engelmann George May BHL. Correspondence Andras John and Engelmann George May Text Illustration Andras to Engelmann biodiversitylibrary org Andras John Permission to digitize granted by rights holder Biodiversity Heritage Library Check categories October PDold books Correspondence