An independent company for much of its life, Ladybird Books became part of the Pearson Group in 1972. However, falling demand in the late 1990s led Pearson to fully merge Ladybird into its Penguin Books subsidiary in 1998, joining other established names in British children's books such as Puffin Books, Dorling Kindersley, and Frederick Warne. The Ladybird offices and printing factory in Loughborough closed the same year, and much of the company's archive of historic artwork was transferred to public collections.