This site offers an invitation to enter your own historic photos, which are then rated. The photos to date range from Elvis to Einstein. The one generating the most points is of a lone man refusing to give the Nazi salute in 1936.
Here are two photos that are explicitly art for health.
Animals used for therapy, 1956
Kiss of Life, 1967 — Utility Worker giving Mouth-to-Mouth to Co-Worker after he contacted a high voltage wire.