Question: When was Joanna Vassa's father's autobiography published?

full_context: Document 1: Sally Hemings: Sarah "Sally" Hemings ( 1773 – 1835) was an enslaved woman of mixed race owned by President Thomas Jefferson. Most historians believe Jefferson was the father of her six children, born after the death of his wife, Martha Jefferson. Four survived to adulthood, and were given freedom by Jefferson. Hemings was the youngest of six siblings by the widowed planter John Wayles and a mixed-race woman he kept as a slave, Betty Hemings; Sally and her siblings were three-quarters European and half-siblings of Jefferson's wife, Martha Wayles Skelton. As an infant Sally came to Monticello as part of Martha's inheritance of her father's slave holdings.
Document 2: Chica da Silva: Francisca da Silva de Oliveira (c. 1732-1796), known in history by the name Chica da Silva whose romanticized version/character is also known by the spelling "Xica da Silva" was a Brazilian woman who became famous for becoming rich and powerful despite having been born into slavery. Her life has been a source of inspiration for many works in television, films, theater and literature. She is popularly known as "the slave who became a queen".
Document 3: Harriet Ann Jacobs: Harriet Ann Jacobs (February 11, 1813 – March 7, 1897) was an African-American writer who escaped from slavery and was later freed. She became an abolitionist speaker and reformer. Jacobs wrote an autobiographical novel, "Incidents in the Life of a Slave Girl", first serialized in a newspaper and published as a book in 1861 under the pseudonym Linda Brent. It was a reworking of the genres of slave narrative and sentimental novel, and was one of the first books to address the struggle for freedom by female slaves, explore their struggles with sexual harassment abuse, and their effort to protect their roles as women and mothers.
Document 4: Juana Maria: Juana Maria (died October 19, 1853), better known to history as the Lone Woman of San Nicolas Island (her Native American name is unknown), was a Native American woman who was the last surviving member of her tribe, the Nicoleño. She lived alone on San Nicolas Island off the coast of California from 1835 until her discovery in 1853. Scott O'Dell's award-winning children's novel "Island of the Blue Dolphins" (1960) was inspired by her story.
Document 5: The Dying Negro: The Dying Negro: A Poetical Epistle was a 1773 abolitionist poem published in England, by John Bicknell and Thomas Day. It has been called "the first significant piece of verse propaganda directed explicitly against the English slave systems". It was quoted in "The Interesting Narrative of the Life of Olaudah Equiano" of 1789.
Document 6: John Holman (slave trader): John Holman was an English slave trader from London who settled in the Pongo River area in the 1760s before eventually moving on to South Carolina in 1790.
Document 7: The Interesting Narrative of the Life of Olaudah Equiano: The Interesting Narrative of the Life of Olaudah Equiano
Document 8: Blockade of Africa: The Blockade of Africa began in 1808 after Britain outlawed the Atlantic slave trade, making it illegal for British ships to transport slaves. The Royal Navy immediately established a presence off Africa to enforce the ban, called the West Africa Squadron. Although the ban initially applied only to British ships, Britain negotiated treaties with other countries to give the Royal Navy the right to intercept and search their ships for slaves. A notable exception was the United States, which refused such permission. The 1807 Act Prohibiting Importation of Slaves technically abolished the intercontinental slave trade in the United States but the ban was not widely enforced and many of the slave ships which escaped the blockade were destined for the southern United States.
Document 9: Joana de Castre: She was born to the noble Pere de Castre and Blanca de So, and married viscount Jofre de Rocabertí, Lord of Peralad, and had four sons and a daughter. She managed the fief of Rocabertí on several occasions during the absence of her spouse. In 1461, her spouse participated i the liberation of Charles, Prince of Viana, form the captivity of his father John II of Aragon and Navarre. When Charles' death resulted in the Catalan Civil War, her brothers sided with the rebels, while Joanna and her spouse sided with John II. During the royal expedition to Girona, Joanna acted as a mediator between the king and her brother Guillem Ramon. When her spouse was taken capture in 1464, she was forced to assume responsibility for his fief until his release in 1472.
Document 10: Olaudah Equiano: Olaudah Equiano (c. 1745 – 31 March 1797), known in his lifetime as Gustavus Vassa ( ), was a prominent African in London, a freed slave who supported the British movement to end the slave trade. His autobiography, published in 1789, helped in the creation of the Slave Trade Act 1807 which ended the African trade for Britain and its colonies.
Document 11: Onesimus (Boston slave): Onesimus (late 1600s–1700s) was an African-born man held as a slave by Puritan minister Cotton Mather, who helped mitigate the impact of a smallpox outbreak in Boston by introducing Mather to the principle of inoculation. In a 2016 "Boston Magazine" survey, he was declared one of the "Best Bostonians of All Time".
Document 12: Joanna Vassa: Joanna Vassa (1795-1857) was the only surviving child of the former slave and anti-slavery campaigner Olaudah Equiano. Her grave has recently been rediscovered in Abney Park Cemetery, London, but little is known of her life.
Document 13: Sons of Africa: Sons of Africa was a late 18th-century British group that campaigned to end slavery. Its members were educated Africans in London, freed slaves who included Ottobah Cugoano, Olaudah Equiano and other leading members of London's black community. It was closely connected to the Society for the Abolition of the Slave Trade, a non-denominational group founded in 1787, whose members included Thomas Clarkson.
Document 14: Equiano (crater): Equiano is a crater on Mercury. It has a diameter of kilometers. Its name was adopted by the International Astronomical Union in 1976. Equiano is named for the abolitionist writer Olaudah Equiano, who lived from 1750 to 1797.
Document 15: Johanna Veenstra: Johanna Veenstra (1894–1933) was the first missionary of the Christian Reformed Church (CRC) to go to Nigeria. She was born on Thursday, April 19, 1894, on Hopper Street in Paterson, New Jersey. Her parents were William Veenstra, later a Christian Reformed pastor, and Cornelia Anna De Hoop. In 1915 she was challenged by Karl Kumm of the Sudan United Mission (SUM) to be a missionary in Africa. On October 2, 1919, she left New York City on the "Mauretania" for England; on December 31, 1919, she took another ship to Africa, arriving in Lagos in January 1920. In February 1921, she arrived at her station in Lupwe, which is near Takum, now in Taraba State. Two years later Johanna Veenstra assumed leadership of the work in Lupwe. She was engaged primarily in medical work and in preaching. During her ministry in Lupwe, a number of people especially of the Kuteb people became Christian and also became more educated. The roots of the Christian Reformed Church of Nigeria (CRCN) and the Reform Church of Christ in Nigeria (RCCN) Headquarters in Takum, Taraba State Nigeria lay in part in the work of Johanna Veenstra.
ground_truth: 1789