Question: When did Wilbur die?
About the article "Wright Brothers flights of 1909", section "The flights".

Candidate passages:
In addition to PAMC, Wilbur was a clinical professor at the Stanford Medical School from 1930 to 1966.
Even after retiring in 1966, he continued to teach.
His students were mostly interns and residents.
Surgical interns at Stanford "loved to scrub" with Wilbur.
There was always a competition to work with him.
When watching him in surgery he made the procedures look so easy.
"Watching him operate was like watching a maestro."
Wilbur did not say much in surgery, but when he did, the interns knew that it was very profound.
(Dr. Phil Sunshine, Interview, Sept. 2011.
)In 1962, there was a vigorous campaign to treat babies in ventilators who had or might suffer respiratory failure.
However, feeding the babies in ventilators was difficult and the doctors were looking for a way to avoid aspiration during feeding (accidental sucking in of food particles or fluids into the lungs).
Dr. D. Vernon Thomas approached Wilbur with the idea of inserting a gastrostomy tube in an infant's stomach while the baby was in the ventilator.
Wilbur thought about it and agreed to try.
The procedure was performed very rapidly and without complications.
It was beautiful to watch.
Dr. Wilbur placed 3-5 more tubes for the neonatal care division and the procedure was adopted.
(Dr. Phil Sunshine, Interview, Sept.
2011.)
A Time to Die is a 1989 novel by Wilbur Smith.
Set in 1987, it is chronologically the last of the 13 Courtney Novels.
Smith did not regard it strictly as a Courtney novel, however, claiming "it's just got a Courtney name in it.
It's not in the mainstream of the series.
"The story line had some similarities to Smith's screenplay "The Last Lion" (1972). 
Appeared once in the Radio series, in episode 6 (The Hitcher).
Howard and Vince are tasked with delivering Tony the Prawn (a "Psychological killer") to Wilbur Fossil's (Bob Fossil's brother, the only character who calls Bob "Robert") zoo for animal offenders.
After Vince and Howard are "trapped in a box by a cockney nutjob" (The Hitcher), Bob Fossil saves them.
The people who live in the box have been trapped there for centuries, living by "the book", which tells them not to open the only door, for the greatest evil lies on the other side.
When Bob opens the door, a garden is on the other side, with Wilbur and "Mrs. Fossil" (Fossil's mother).
Wilbur threatened Fossil that if he was late, he would tell their mother that Fossil was still alive, and that he didn't die in Vietnam as a war hero.
The episode ends with Fossil shouting "It is the greatest evil!
Everyone get back in the freakin' box!".
Wilbur is constantly referred to as "anal" by Bob, especially over lateness. 
Wilbur was born in Boonesboro, Iowa, the son of attorney and businessman Dwight Locke Wilbur and the former Edna Maria ("née" Lyman).
He was raised with a brother, Curtis D. Wilbur, who was served as the U.S. Secretary of the Navy under President Calvin Coolidge, and was a judge of the Supreme Court of California.
The Wilbur family moved to Riverside, California, when Ray Lyman was twelve.
Wilbur graduated from Riverside High School, then studied at Stanford University, receiving a B.A.
degree in 1896 and an M.A.
degree in 1897.
He then studied at Cooper Medical College in San Francisco, receiving a Doctor of Medicine degree in 1899.
While a freshman at his Stanford home, Wilbur met future President Herbert Hoover, who was drumming up business on campus for a local laundry.
The two men became lifelong friends.
On December 5, 1898, Wilbur married the former Marguerite May Blake, who was the college friend of Lou Hoover's wife.
Marguerite Wilbur was the severely injured, when she fell from a horse in 1922, when she breaking several vertebrae in her spine and becoming permanently incapacitated.
The couple had five children (Jessica Wilbur Ely, Blake Colburn Wilbur, Dwight Locke Wilbur, Lois Wilbur Hopper, and Ray Lyman Wilbur, Jr.).
Marguerite Wilbur died on December 24, 1946, at aged 71.  
Mason's diagnosis has been challenged.
Psychiatrist Herbert Spiegel saw Mason for several sessions while Wilbur was on vacation, and felt that Wilbur was manipulating Mason into behaving as though she had multiple personalities when she did not.
Spiegel suspected Wilbur of having publicized Mason's case for financial gain.
According to Spiegel, Wilbur's client was a hysteric, but did not show signs of multiple personalities; in fact, he later stated that Mason denied to him that she was "multiple", but claimed that Wilbur wanted her to "be" people.
Spiegel confronted Wilbur, who responded that the publisher would not publish the book unless it was what she said it was.
Spiegel revealed that he possessed audio tapes in which Wilbur tells Mason about some of the other personalities she has already seen in prior sessions.
Spiegel believes these tapes are the "smoking gun" proving that Wilbur induced her client to believe she was multiple.
Spiegel did not make these claims until after Schreiber, Wilbur and Mason were all dead.
In August 1998, psychologist Robert Rieber of John Jay College of Criminal Justice challenged Mason's diagnosis, citing the tapes and claiming she was instead an "extremely suggestible hysteric".
He claimed Wilbur had manipulated Mason in order to secure a book deal.
In a review of Rieber's book "Bifurcation of the Self", Mark Lawrence asserts that Rieber repeatedly distorted the evidence and left out a number of important facts about Mason's case, in order to advance his case against the validity of the diagnosis.
Debbie Nathan's "Sybil Exposed" draws upon an archive of Schreiber's papers stored at John Jay College of Criminal Justice and other first-hand sources.
Nathan describes the purported manipulation of Wilbur by Mason and vice versa, going into personal detail about the lives of Mason, Wilbur and Schreiber.
Nathan ascribes Mason's physical and sensory issues to a lifelong case of pernicious anemia but mistaken at the time for psychogenic symptoms caused by stress.
Nathan claims that Wilbur and Mason knowingly perpetrated a fraud.
She cites a well-known 1958 letter by Mason (which is reprinted in "Sybil") in which she claimed to pose as a multiple for attention and excitement.
Wilbur believed this letter was an attempt by Mason to temporarily put off painful therapy.
Nathan claims Schreiber wrote "Sybil" based on stories coaxed from Mason during therapy, and that this case created an "industry" of repressed memory.
The case remains controversial.
Although Wilbur's papers were destroyed, copies and excerpts within the Flora Rheta Schreiber Papers at the Lloyd Sealy Library of John Jay College were unsealed in 1998.
Nathan's writing and her research methods have been publicly criticized by Mason's family and by Dr. Patrick Suraci, who was personally acquainted with Shirley Mason.
In addition, Suraci claims that Spiegel behaved unethically in withholding tapes which supposedly proved Wilbur had induced Mason to believe she had multiple personalities.
Spiegel also claimed to have made films of himself hypnotizing Mason, supposedly proving that Wilbur had "implanted false memories" in her mind, but when Suraci asked to see the films Spiegel said he had lost them.
In 2013, artist-journalist Nancy Preston published "After Sybil", a personal memoir which includes facsimile reproductions of Mason's personal letters to her, along with color plates of her paintings.
According to Preston, Mason taught art at Ohio's Rio Grande College, where Preston was a student.
The two became close friends and corresponded until a few days before Mason's death.
In the letters, Mason confirmed that she had had multiple personalities.