https://creativecommons.org/publicdomain/zero/1.0/https://www.rawpixel.com/image/13988462![Henri Moissan. Photogravure after Eug. Pirou.](https://images.rawpixel.com/image_social_portrait/cHJpdmF0ZS9sci9pbWFnZXMvd2Vic2l0ZS8yMDI0LTAyL2xyL3djaHkydmZrOWctaW1hZ2UuanBn.jpg)
![Henri Moissan. Photogravure after Eug. Pirou.](https://images.rawpixel.com/image_social_portrait/cHJpdmF0ZS9sci9pbWFnZXMvd2Vic2l0ZS8yMDI0LTAyL2xyL3djaHkydmZrOWctaW1hZ2UuanBn.jpg)
Henri Moissan. Photogravure after Eug. Pirou.
Henri Moissan. Photogravure after Eug. Pirou.
Original public domain image from Wellcome Collection
Public DomainFree CC0 image for Personal and Business use