James Tiptree Jr.
James Tiptree, Jr. (1915–1987) was the pen name of American science fiction author Alice Bradley Sheldon, used from 1967 to her death. She also occasionally wrote under the pseudonym Raccoona Sheldon (1974–1977). Tiptree/Sheldon was most notable for breaking down the barriers between writing perceived as inherently "male" or "female" – it was not publicly known until 1977 that James Tiptree, Jr. was a woman.