https://creativecommons.org/publicdomain/zero/1.0/https://www.rawpixel.com/image/8230300![Man of Science (1839) by American 19th Century.](https://images.rawpixel.com/image_social_square/cHJpdmF0ZS9sci9pbWFnZXMvd2Vic2l0ZS8yMDIyLTEwL21hbl9vZl9zY2llbmNlXzE5NzEuODMuOC5qcGc.jpg)
![Man of Science (1839) by American 19th Century.](https://images.rawpixel.com/image_social_square/cHJpdmF0ZS9sci9pbWFnZXMvd2Vic2l0ZS8yMDIyLTEwL21hbl9vZl9zY2llbmNlXzE5NzEuODMuOC5qcGc.jpg)
Man of Science (1839) by American 19th Century.
Man of Science (1839) by American 19th Century.
Original public domain image from National Gallery of Art
Public DomainFree CC0 image for Personal and Business use