https://creativecommons.org/publicdomain/zero/1.0/https://www.rawpixel.com/image/13958090![Johann Philipp Eysel. Line engraving by J. G. Mentzel.](https://images.rawpixel.com/image_social_portrait/cHJpdmF0ZS9sci9pbWFnZXMvd2Vic2l0ZS8yMDI0LTAyL2xyL3djaHZ2dXRqdWUtaW1hZ2UuanBn.jpg)
![Johann Philipp Eysel. Line engraving by J. G. Mentzel.](https://images.rawpixel.com/image_social_portrait/cHJpdmF0ZS9sci9pbWFnZXMvd2Vic2l0ZS8yMDI0LTAyL2xyL3djaHZ2dXRqdWUtaW1hZ2UuanBn.jpg)
Johann Philipp Eysel. Line engraving by J. G. Mentzel.
Johann Philipp Eysel. Line engraving by J. G. Mentzel.
Original public domain image from Wellcome Collection
Public DomainFree CC0 image for Personal and Business use