https://creativecommons.org/publicdomain/zero/1.0/https://www.rawpixel.com/image/14009867![Human heads, male and female, showing different types of emotions. Drawing by S. Jenner, 18--.](https://images.rawpixel.com/image_social_portrait/cHJpdmF0ZS9sci9pbWFnZXMvd2Vic2l0ZS8yMDI0LTAyL2xyL3djdHphYjMzdHgtaW1hZ2UuanBn.jpg)
![Human heads, male and female, showing different types of emotions. Drawing by S. Jenner, 18--.](https://images.rawpixel.com/image_social_portrait/cHJpdmF0ZS9sci9pbWFnZXMvd2Vic2l0ZS8yMDI0LTAyL2xyL3djdHphYjMzdHgtaW1hZ2UuanBn.jpg)
Human heads, male and female, showing different types of emotions. Drawing by S. Jenner, 18--.
Human heads, male and female, showing different types of emotions. Drawing by S. Jenner, 18--.
Original public domain image from Wellcome Collection
Public DomainFree CC0 image for Personal and Business use