Approximately six months after meeting Feiffer, Juster received his discharge from the Navy, and worked for a Manhattan architectural firm. He also did some part-time teaching and undertook other jobs. Juster, Feiffer, and another friend rented an apartment on State Street. Juster also resorted to pulling pranks occasionally on Feiffer. Juster's children's novel, "The Phantom Tollbooth," was published in 1961, with Feiffer doing the drawings. This was followed by "The Dot and the Line" (1963), which became a standard book in classrooms around the country. Juster went on to author "Alberic the Wise and Other Journeys" (1965), "" (1969), "Otter Nonsense" (1982), and "As Silly as Knees, as Busy as Bees" (1998), among other works. He also published "A Woman's Place: Yesterday's Women in Rural America" in 1996 for an adult audience, based off his personal experience of residing on a farm in Massachusetts.