Martyl Langsdorf

Martyl Suzanne Schweig Langsdorf (1917–2013) was my first cousin once removed. She was an artist, and in 1947 designed the original Doomsday Clock for the cover of the Bulletin of the Atomic Scientists. She was married to physicist Alexander Langsdorf, who worked on the Manhattan Project. For more information about Martyl, see her website and her Wikipedia page.