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Mary Craig Sinclair

1882 – 1961

American parapsychologist

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About Mary Craig Sinclair

Lived 1882 – 1961 (aged 79). Mary Craig Sinclair was an American writer.

Mary Craig Sinclair (1882–1961) was a writer, publisher, and political activist. She was the wife of Upton Sinclair.

Early life and education She was born Mary Craig Kimbrough in Greenwood, Mississippi, on February 12, 1882, the oldest child of Mary Hunter ( Southworth) and Allan McCaskill Kimbrough, a judge. Beginning at age 13, Mary studied at the Mississippi State College for Women (starting with what were essentially high school classes) and graduated from the Gardner School for Young Ladies in New York City in 1900.

On a trip with her mother to a sanitarium in Battle Creek, Michigan, they attended a lecture by Upton Sinclair, who had published The Jungle, where they met him. Kimbrough talked with him about her writing and he began to teach her through their deepening relationship.

Sterling and Sinclair had been friends for years. Now they competed for Kimbrough's affections. She chose Sinclair. All three remained close friends until Sterling's death in 1926. Sterling taught Mary Craig Sinclair how to write poetry.

At the time of the Kimbrough-Sinclair marriage on April 21, 1913, the New York Times reported that Mary Craig Kimbrough was best known in the South for The Romance History of Winnie Davis, her biography of Winnie Davis, the daughter of Jefferson Davis.

According to Craig, at her insistence Upton Sinclair published Sylvia (1913) under his name. Craig said that she wrote the novel about a Southern girl based on her own experiences.

Once married, she said they collaborated on a sequel, Sylvia's Marriage (1914), which was also published under Upton Sinclair's name, by John C. Winston Company, Philadelphia.

The writers disagreed about authorship. In his 1962 autobiography, Upton Sinclair wrote: "[Mary] Craig had written some tales of her Southern girlhood; and I had stolen them from her for a novel to be called Sylvia."

Marriage and family Kimbrough married Upton Sinclair on April 12, 1913. At the time her friends said she did not share her new husband's "liberal ideas on matrimony." He had once said that marriage is "nothing but legalized slavery...for the average married woman."

Her husband, Upton Sinclair, credited her with helping him to "write and publish three million books and pamphlets, flowing into every country in the world." In his autobiography, he portrayed Mary Sinclair as someone "who may not always have believed in what her husband was doing but cheerfully helped him do it."

Mental telepathy Upton Sinclair's Mental Radio (1930) reported that Mary had telepathic powers. He included her testimony describing her technique and her assertion that others could acquire the same ability. Mary attempted to duplicate 290 pictures which were drawn by her brother. Sinclair claimed Mary successfully duplicated 65 of them, with 155 "partial successes" and 70 failures. The book was criticized by science writer Martin Gardner who wrote "As Mental Radio stands, it is a highly unsatisfactory account of conditions surrounding the clairvoyance tests. Throughout his entire life, Sinclair has been a gullible victim of mediums and psychics." The experiment was not done in scientifically controlled conditions and the possibility of sensory leakage had not been ruled out.

Works and critical responses As author The Romance History of Winnie Davis (unpublished) uncredited co-author with Upton Sinclair, Sylvia: A Novel (Pasadena: Upton Sinclair, 1913) uncredited co-author with Upton Sinclair, Sylvia’s Marriage: A Novel (Philadelphia: John C. Winston, 1914) Sonnets (Pasadena: Upton Sinclair, ) Southern Belle: A Personal Story of a Crusader’s Wife (New York: Crown, 1957); reprinted (Phoenix: Sinclair Press, 1962); reprinted (Jackson: University Press of Mississippi, 1999)

The New York Times called Sylvia "..the best novel Mr. Sinclair has yet written–so much the best that it stands in a class by itself."

According to one reviewer, in Southern Belle Sinclair reports on her early life with "sentimentality...that does no real harm. Indeed, it is rather touching." "Mrs. Sinclair," it said, "has produced a book interesting enough to suggest that she and Upton Sinclair learned from each other and significant enough to be worth attention."

As editor and publisher

Kate Crane-Gartz, Off to the Antipodes (n. p.: Mary Craig Sinclair, 1900)

Kate Crane-Gartz, The Parlor Provocateur: From Salon to Soap-Box (Pasadena: Mary Craig Sinclair, 1923)

Kate Crane-Gartz, The Letters of Kate Crane-Gartz (Pasadena: Mary Craig Sinclair, 1923)

Kate Crane-Gartz, Letters of Protest (Pasadena: Mary Craig Sinclair, 1925)

Kate Crane-Gartz, A Woman and War (Long Beach: Mary Craig Sinclair, 1928)

Kate Crane-Gartz, Travel Diary: 1929 (Pasadena: Mary Craig Sinclair, first edition n.d.; second edition 1939)

Kate Crane-Gartz, Still More Letters (Pasadena: Mary Craig Sinclair, [1931?])

Kate Crane-Gartz, Seventh Book (Pasadena: Mary Craig Sinclair, 1932)

Kate Crane-Gartz, European Impressions: 1936 (n. p.: Mary C. Sinclair, 1936)

Kate Crane-Gartz, Prophetic Letters v. 4 (Pasadena: Mary Craig Sinclair, )

Death Sinclair had become extremely frail by the mid-1950s, and died in Pasadena, California, on April 26, 1961, at the age of 78.

Honors The poet George Sterling addressed his Sonnets to Craig (1928) to her.

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Important facts

People in Mary Craig Sinclair's life

Named in this biography and alive at the same time

Contemporaries

People whose lives overlapped Mary Craig Sinclair's

Frequently asked questions

Who was Mary Craig Sinclair?

American parapsychologist

When was Mary Craig Sinclair born?

Mary Craig Sinclair was born on 12 February 1882 in Greenwood.

When did Mary Craig Sinclair die?

Mary Craig Sinclair died on 26 April 1961 in Monrovia.

What was Mary Craig Sinclair's occupation?

Mary Craig Sinclair was a writer.

What nationality was Mary Craig Sinclair?

Mary Craig Sinclair was American.

Sources & further reading

· Wikipedia: Mary Craig Sinclair

· Wikidata: Q6779256

· DBpedia: Mary Craig Sinclair

Cite this page

APA: Biography.guide. (2026). Mary Craig Sinclair. https://biography.guide/mary-craig-sinclair/

MLA: "Mary Craig Sinclair." Biography.guide, https://biography.guide/mary-craig-sinclair/.

Chicago: "Mary Craig Sinclair." Biography.guide. https://biography.guide/mary-craig-sinclair/.

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