top ten writers of the twentieth century

Louis L'amour
Elmore Leonard
Philip  k. Dick
Dashiel Hammet
Raymond Chandler
J.P. Marquand
James Ellroy
Chester Himes
Glendon Swarthout
Colin Kapp
Frederick Pohl...

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Thomas Mcguane
Walter Moudy
John Buchan
A.E. Van Vogt
Lou Cameron (The Closing Circle)
David Morell
Charles Durbin (Vendetta: A novel even the mafia would disown!)