Children’s books represented a fast-growing market throughout the eighteenth and nineteenth centuries, a development to which a great number of women authors contributed. As the conception of childhood changed during those years, so did the books designed for children: the trend moved away from overt didactic moralism, towards a content that was thought more enjoyable for children, seeking to teach through play, to such an extent that books were sometimes perceived as toys. The form of children’s books also changed: they presented shorter words and larger typefaces, they included hieroglyphic minglings of word and image, and they were sometimes made ‘indestructible’ by being printed on linen.