Maggie Cassidy, a 1959 novel by Jack Kerouac written about his times in Lowell, MA from 1938 to 1939. It chronicles Kerouac's real life relationship with teen age heart-throb Mary Carney. It is unique for Kerouac for its high school setting and teenage characters. He wrote the novel in 1953 but it was not published until 1959, after the success of On the Road.