CapstoneÂ is a publisher of childrenâ€™s books and digital products. Capstone focuses on the educational market. They also sell to the trade market and internationally. Capstone publishesÂ nonfiction,Â fiction, picture books, interactive books,Â audio books, literacy programs, and digital media. Imprints and divisions include Capstone Press, Compass Point Books, Picture Window Books, Stone Arch Books, Red Brick Learning, Capstone Digital, Heinemann-Raintree and Switch Press. Capstone acquired the assets of Heinemann-Raintree library reference fromÂ Pearson EducationÂ in 2008.Â Heinemann-Raintree has offices inÂ ChicagoÂ andÂ Oxford, England.