A signature program at AAS since 1985, the annual PHBAC seminars have gathered instructors and participants at the Society, putting them in touch with the AAS collections, the curatorial staff, and, just as importantly, with one another. The seminars have investigated topics such as Indigenous book history, nineteenth-century African American print culture, material religion, the economics of printing and publishing, the American Revolution, and hemispheric, and multilingual approaches to the book in the Americas. The seminars are often led by two co-instructors. Past seminar leaders include Derrick Spires and Benjamin Fagan, Kirsten Silva Gruesz and Anna Brickhouse, Lara Langer Cohen and Jordan Alexander Stein, Meredith McGill and Lisa Gitelman, Scott Casper and Jeff Groves, and Peter Stallybrass, and Michael Warner.