Faulkner also had great influence on Mario Vargas Llosa, particularly on the early novels The Time of the Hero, The Green House and Conversation in the Cathedral. Vargas Llosa has claimed that during his student years he learned more from Yoknapatawpha than from classes. The works of William Faulkner are a clear influence on the French novelist Claude Simon, and the Portuguese novelist António Lobo Antunes. Cormac McCarthy has been described as a "disciple of Faulkner". After his death, Estelle and their daughter, Jill, lived at Rowan Oak until Estelle's death in 1972. The property was sold to the University of Mississippi that same year. The house and furnishings are maintained much as they were in Faulkner's day. Faulkner's scribblings are preserved on the wall, including the day-by-day outline covering a week he wrote on the walls of his small study to help him keep track of the plot twists in his novel, A Fable. Some of Faulkner's works have been adapted into films such as James Franco's As I Lay Dying (2013). They have received a polarized response, with many critics contending that Faulkner's works are "unfilmable". Faulkner's final work, The Reivers, was adapted into a 1969 film starring Steve McQueen. During the Nazi Occupation of France in World War II, the German occupiers banned American literature. A black-market of American books emerged, and reading works by Hemingway and Faulkner became an act of defiance. Faulkner remains especially popular in France, where a 2009 poll found him the second most popular writer (after only Marcel Proust). Contemporary Jean-Paul Sartre stated that "for young people in France, Faulkner is a god", and Albert Camus made a stage adaptation of Faulkner's Requiem for a Nun. He also won the U.S. National Book Award twice, for Collected Stories in 1951 and A Fable in 1955. The United States Postal Service issued a 22-cent postage stamp in his honor on August 3, 1987. Faulkner had once served as Postmaster at the University of Mississippi, and in his letter of resignation in 1923 wrote: As long as I live under the capitalistic system, I expect to have my life influenced by the demands of moneyed people. But I will be damned if I propose to be at the beck and call of every itinerant scoundrel who has two cents to invest in a postage stamp. This, sir, is my resignation. On October 10, 2019,