https://creativecommons.org/publicdomain/zero/1.0/https://www.rawpixel.com/image/13984127![Fritz Ronnefeldt distributing medicine. Photograph.](https://images.rawpixel.com/image_social_landscape/cHJpdmF0ZS9sci9pbWFnZXMvd2Vic2l0ZS8yMDI0LTAyL2xyL3djZmE3ZDZ1aDQtaW1hZ2UuanBn.jpg)
![Fritz Ronnefeldt distributing medicine. Photograph.](https://images.rawpixel.com/image_social_landscape/cHJpdmF0ZS9sci9pbWFnZXMvd2Vic2l0ZS8yMDI0LTAyL2xyL3djZmE3ZDZ1aDQtaW1hZ2UuanBn.jpg)
Fritz Ronnefeldt distributing medicine. Photograph.
Fritz Ronnefeldt distributing medicine. Photograph.
Original public domain image from Wellcome Collection
Public DomainFree CC0 image for Personal and Business use