Operational since 1955, Definition Press publishes a variety of books about the Aesthetic Realism Foundation. The press publishes books on various subjects, such as art, education, poetry, criticism, ethics and economics. It has printed various books, including Self and World, Children's Guide to Parents & Other Matters, Hot Afternoons Have Been in Montana and THE WILLIAMS-SIEGEL DOCUMENTARY. The press offers books to libraries and booksellers. Definition Press operates an online library that features essay books, reviews and lectures. The press additionally provides delivery and shipping services.