Mason & Dixon is a postmodernist novel by the American author Thomas Pynchon, published in 1997. It presents a fictionalized account of the collaboration between Charles Mason and Jeremiah Dixon in their astronomical and surveying exploits in the Dutch Cape Colony, Saint Helena, Great Britain and along the Mason-Dixon line in British North America on the eve of the Revolutionary War in the United States.

The novel, written in a style based on late-18th-century English, is a frame narrative told from the focal point of Rev. Wicks Cherrycoke, a clergyman of dubious orthodoxy who, on a cold December evening in 1786, attempts to entertain and divert his extended family (partly for amusement, and partly to keep his coveted status as a guest in the house) by telling a tall tale version of Mason and Dixon's biographies (claiming to have accompanied Mason and Dixon throughout their journeys).

Pynchon began work on the novel as early as 1975, and in 1978 he was reported to be in England researching the lives of Mason and Dixon. Until the release of Vineland, it was long rumored to be his next novel following Gravity's Rainbow. It was formally announced by the publisher in October 1996 with a first printing of 200,000. It was published on April 30, 1997.

Episode 1

The Reverend Wicks Cherrycoke, at the Philadelphia home of his sister Elizabeth LeSpark, earns his room and board by telling stories to his niece and nephews. The novel opens during the winter of 1786 as the Reverend, by request from his nephews, embarks on his first story set in America, which begins with his recollection of the first meeting of Charles Mason and Jeremiah Dixon as told to him by the two men.

Episode 2

A brief episode in which respective letters of introduction are exchanged between Mason and Dixon.

Episode 3