After six years of living as an itinerant artist in Europe, Wyeth returned to New York City aboard the U.S.S. President Harding in July 1938.

In 1939, Wyeth's paintings were exhibited at the Corcoran Gallery of Art in Washington, D.C. and the Frank Rehn Gallery in New York City.

During World War II, Wyeth served in the United States Coast Guard.
B.J. Omanson suspects, however, that Wyeth may have continued to work in the intelligence field.

By the early 1950s, Wyeth had been received into the Roman Catholic Church.
Despite what he terms the, "ubiquitous presence of French Catholicism," in Wyeth's war poetry, Dana Gioia acknowledges that, "The journey must have been complicated.
Wyeth was almost certainly gay, although no documentation survives concerning his sexual orientation.
What we do know is that by late middle age, he was a serious Catholic.
His personal journey resembles that of another war poet, Siegfried Sassoon, who was a homosexual in his early years, but eventually married and converted to Catholicism (prompted by Ronald Knox).
Sassoon's biography is lavishly documented; Wyeth's is not.
We will probably never know the details of his inner life."

During the 1970s, Wyeth was part of "a small circle of Rhode Island Catholic artists and intellectuals."

According to Dana Gioia, "In his later years he composed sacred music.
When his Missa Prima was premiered in 1974 by a 65-voice choir for the centenary of St. Edward's Church in Providence, Rhode Island, Wyeth told the Providence Journal-Bulletin that he had begun the work twenty years earlier."

The Princeton alumni organization consistently failed to locate Wyeth and eventually dropped him from the 1915 Class roll, "by mutual consent."

Toward the end of his life he lived with his niece, poet Jane Marion McLean in Princeton, New Jersey.
After six years of living as an itinerant artist in Europe, Wyeth returned to New York City aboard the U.S.S. President Harding in July 1938.
In 1939, Wyeth's paintings were exhibited at the Corcoran Gallery of Art in Washington, D.C. and the Frank Rehn Gallery in New York City.
During World War II, Wyeth served in the United States Coast Guard. B.J. Omanson suspects, however, that Wyeth may have continued to work in the intelligence field.
By the early 1950s, Wyeth had been received into the Roman Catholic Church. Despite what he terms the, "ubiquitous presence of French Catholicism," in Wyeth's war poetry, Dana Gioia acknowledges that, "The journey must have been complicated. Wyeth was almost certainly gay, although no documentation survives concerning his sexual orientation. What we do know is that by late middle age, he was a serious Catholic. His personal journey resembles that of another war poet, Siegfried Sassoon, who was a homosexual in his early years, but eventually married and converted to Catholicism (prompted by Ronald Knox). Sassoon's biography is lavishly documented; Wyeth's is not. We will probably never know the details of his inner life."
During the 1970s, Wyeth was part of "a small circle of Rhode Island Catholic artists and intellectuals."
According to Dana Gioia, "In his later years he composed sacred music. When his Missa Prima was premiered in 1974 by a 65-voice choir for the centenary of St. Edward's Church in Providence, Rhode Island, Wyeth told the Providence Journal-Bulletin that he had begun the work twenty years earlier."
The Princeton alumni organization consistently failed to locate Wyeth and eventually dropped him from the 1915 Class roll, "by mutual consent." 
Toward the end of his life he lived with his niece, poet Jane Marion McLean in Princeton, New Jersey.
John Allan Wyeth (poet)