828939 Radium Girls work in a factory of the United States Radium Corporation. c.1922 (sepia photo) by American Photographer, (20th century); Private Collection; (add.info.: The Radium Girls were female factory workers who contracted radiation poisoning from painting watch dials with glow-in-the-dark paint at the United States Radium factory in Orange, New Jersey, around 1917. The women, who had been told the paint was harmless, ingested deadly amounts of radium by licking their paintbrushes to give them a fine point; some also painted their fingernails and teeth with the glowing substance.); Prismatic Pictures ; American, out of copyright.