Which of these Irving Stone novels was not made into a movie?

The Irving Stone novel, from those listed, that has not been made into a big screen movie is "Immortal Wife". This is a literary work that chronicles the indestructible marriage of John C. Fremont and his strong willed wife, who helped aid him in his great accomplishments. The book was originally published in 1944 as a work of biographical historical fiction, interested in the history of the American west, it's exploration, and the people.

Film adaptations of novels by Stone include: "The President's Lady" (1953), "Lust for Life" (1956), and "The Agony and the Ecstasy" (1965). Based on Stone's 1951 novel "The President's Lady", the film with the same name, starring Charlton Heston as Andrew Jackson and Susan Hayward as Rachel Donelson Jackson, was made. Next, another novel by Stone "Lust for Life" (1934) was made into a film, starring Kirk Douglas as Van Gogh. Additionally, in 1965 a film was made of "The Agony and the Ecstasy", starring Charlton Heston as Michelangelo and Rex Harrison as Pope Julius II.