What John Wayne western originally filmed in 3D was based on a Louis first novel?

The John Wayne western originally filmed in 3D based on a Louis L'Amour novel is "The Man Who Shot Liberty Valance" (1962).

While the film is not directly based on a specific L'Amour novel, it draws heavily from the themes and atmosphere found in his works, particularly his western novels. It was adapted by the renowned screenwriter, James Lee Barrett, who had also worked on other westerns inspired by L'Amour.