Martyl Suzanne Schweig Langsdorf was the daughter of artists, the wife of a physicist, and was, herself, a post office muralist. But more importantly, she created the Doomsday Clock. She allegedly said, in regards to her famous Bulletin of Atomic Scientists’ cover that she thought she probably got the job because she was the only artist the founders knew. I can relate.
By all accounts, Martyl was brilliant, as well as, talented. She worked in a variety of genres and styles, but seems to be best known for her science-related work. You can see some at the Smithsonian American Art Museum website and at Wikiart.
Martyl created two post office murals: Wheat Workers (Russell, Kansas) and La Guignolee (Ste. Genevieve, Missouri).