The New Middle Ages is a 24-book series with 24 released primary works first released in 1133 with contributions by Pierre Abélard, Héloïse d'Argenteuil, Heloise, Frances A. Underhill, Heather Blurton, Albrecht Classen, Sarah L. Higley, Susan Signe Morrison, Timothy Scott Jones, Roger A. Ladd, Jóhanna Katrín Friðriksdóttir, and Suzanne M. Edwards.