It is said that when Truman Capote died Gore Vidal commented, “Good career move.”

Maybe that is a bit crassly stated, but frequently the death of an author will result in a tremendous upsurge in book sales. Not only that, but sometimes posthumous works multiply. Consider the list of posthumous books by Ernest Hemingway (source: Casanova Was A Book Lover);

A Moveable Feast (1964)

The Fifth Column and Four Unpublished Stories of the Spanish Civil War (1969)

Island in the Stream (1970)

The Nick Adams Stories (1972)

Along With Youth: Hemingway, the Early Years (1985)

The Dangerous Summer (1985)

Ernest Hemingway: Dateline Toronto (1985)

The Garden of Eden ( 1986)

The Complete Short Stories of Ernest Hemingway: The Finca Vigia Edition (1987)

Hemingway: The Toronto Years (1994)

The Good Lion (1998)

At the Hemingways: with Fifty Years of Correspondence between Ernest and Marcelline Hemingway (1999)

True at First Light (1999)

[A few of the above are either biographies or collections that contain previously unpublished materials.]

Wow, Ernest Hemingway published more after he was dead than most of us will during our lifetime.