States Irving arrived in New York on May 21, 1832, after 17 years abroad. That September, he accompanied Commissioner on Indian Affairs Henry Leavitt Ellsworth on a surveying mission, along with companions Charles La Trobe and Count Albert-Alexandre de Pourtales, and they traveled deep into Indian Territory (now the state of Oklahoma). At the completion of his western tour, Irving traveled through Washington, D.C. and Baltimore, where he became acquainted with politician and novelist John Pendleton Kennedy. Irving was frustrated by bad investments, so he turned to writing to generate additional income, beginning with A Tour on the Prairies which related his recent travels on the frontier. The book was another popular success and also the first book written and published by Irving in the United States since A History of New York in 1809. In 1834, he was approached by fur magnate John Jacob Astor, who convinced him to write a history of his fur trading colony in Astoria, Oregon. Irving made quick work of Astor's project, shipping the fawning biographical account Astoria in February 1836. In 1835, Irving, Astor, and a few others founded the Saint Nicholas Society in the City of New York. During an extended stay at Astor's home, Irving met explorer Benjamin Bonneville and was intrigued with his maps and stories of the territories beyond the Rocky Mountains. The two men met in Washington, D.C. several months later, and Bonneville sold his maps and rough notes to Irving for $1,000. Irving used these materials as the basis for his 1837 book The Adventures of Captain Bonneville. These three works made up Irving's "western" series of books and were written partly as a response to criticism that his time in England and Spain had made him more European than American. Critics such as James Fenimore Cooper and Philip Freneau felt that he had turned his back on his American heritage in favor of English aristocracy. Irving's western books were well received in the United States, particularly A Tour on the Prairies, though British critics accused him of "book-making". In 1835, Irving purchased a "neglected cottage" and its surrounding riverfront property in Tarrytown, New York, which he named Sunnyside in 1841. It required constant repair and renovation over the next 20 years, with costs continually escalating, so he reluctantly agreed to become a regular contributor to The Knickerbocker magazine in 1839, writing new essays and short stories