https://creativecommons.org/publicdomain/zero/1.0/https://www.rawpixel.com/image/13984411
Saint Mark, Saint Luke, Saint Matthew and Saint John the Evangelist. Etching by H. Guttenberg after J.C. Naigeon after J. Jordaens.
Original public domain image from Wellcome Collection
Public DomainFree CC0 image for Personal and Business use