All of the following writers wrote during the years between the First and Second World Wars EXCEPT

Langston Hughes was a prominent figure of the Harlem Renaissance and wrote extensively during the interwar years, producing significant works that explored African American identity and experiences. His literary contributions, such as poetry and essays, were influential during the 1920s and 1930s.

Sherwood Anderson was active during the interwar period, with his most famous work, "Winesburg, Ohio," published in 1919. His writing captures the essence of American life and the psychological complexities of small-town existence, making him a key voice of that era.

F. Scott Fitzgerald is often regarded as one of the defining writers of the Jazz Age and the 1920s. His notable works, including "The Great Gatsby," were published during the interwar period, solidifying his place in American literature during those years.

Gertrude Stein was an influential writer and art collector who was active between the World Wars. Her works, such as "Three Lives" and "Tender Buttons," were published in the early 20th century and contributed significantly to modernist literature.