Dean & Son was a 19th-century London publishing firm, best known for making and mass-producing moveable children's books and toy books, established around 1800. Thomas Dean founded the firm, probably in the late 1790s, bringing to it innovative lithographic printing processes. By the time his son George became a partner in 1847, the firm was the preeminent publisher of novelty children's books in London. The firm was first located on Threadneedle Street early in the century; it moved to Ludgate Hill in the middle of the century, and then to Fleet Street from 1871 to 1890. In the mid-20th century the firm published books by Enid Blyton and children's classics in the Dean's Classics series.