Emerging in the latter decades of the 18th century, New York periodical literature established and maintained a major relationship with the city and its people over the course of major historical, social, political, and cultural change. During this period, New York was one part of a literary triumvirate with Philadelphia and Boston in which periodical writing flourished. This periodical power soon shifted, however, to New York, with the founding of the New-York Magazine; or, Literary Repository (1790) by brothers Thomas and James Swords. The New–York Magazine preceded one of the most influential periodical publications in the history of New York writing by over a quarter of a century: the Knickerbocker (1833). New York was quickly becoming the centre of the American publishing world and the periodical was at the heart of this literary uprising. But, as this chapter argues, New York periodical literature first demonstrated its influence on New York society decades before in the final years of the 18th century.