I couldn't not look up "Racoona Sheldon" and found:

Alice Bradley Sheldon (August 24, 1915 – May 19, 1987) was an American science fiction author better known as James Tiptree Jr., a pen name she used from 1967 to her death. It was not publicly known until 1977 that James Tiptree Jr. was a woman. From 1974 to 1977 she also used the pen name Raccoona Sheldon. Sheldon was inducted by the Science Fiction Hall of Fame in 2012.[2]

Wow, what a bio. 1941: Chicago Sun art critic. WW2: WAAC major. 1952-55 CIA. 1967 PhD from GWU in experimental psychology.