https://creativecommons.org/publicdomain/zero/1.0/https://www.rawpixel.com/image/14007858
A town gentleman visiting a village dentist and enquiring if he uses gas, the dentist retorts he does but prefers daylight. Process print after G. Du Maurier, 1895.
Original public domain image from Wellcome Collection
Public DomainFree CC0 image for Personal and Business use