https://creativecommons.org/publicdomain/zero/1.0/https://www.rawpixel.com/image/14020830![Placidus Fixlmillner. Stipple engraving by C. Westermayr.](https://images.rawpixel.com/image_social_portrait/cHJpdmF0ZS9sci9pbWFnZXMvd2Vic2l0ZS8yMDI0LTAyL2xyL3djeXA1ZXVqNG4taW1hZ2UuanBn.jpg)
![Placidus Fixlmillner. Stipple engraving by C. Westermayr.](https://images.rawpixel.com/image_social_portrait/cHJpdmF0ZS9sci9pbWFnZXMvd2Vic2l0ZS8yMDI0LTAyL2xyL3djeXA1ZXVqNG4taW1hZ2UuanBn.jpg)
Placidus Fixlmillner. Stipple engraving by C. Westermayr.
Placidus Fixlmillner. Stipple engraving by C. Westermayr.
Original public domain image from Wellcome Collection
Public DomainFree CC0 image for Personal and Business use