Between 1968 and 1974 Ursula K. Le Guin published

A Wizard of Earthsea
The Left Hand of Darkness
The Tombs of Atuan
The Lathe of Heaven
The Farthest Shore
The Disposessed

— along with a series of classic stories, including “Vaster than Empires and More Slow,” “Winter’s King,” and “The Ones Who Walk Away from Omelas.” That would be quite a literary career. She did it in six years.