The broadsides in this collection are printed by Eucalyptus Press, the imprint of the Mills College Book Art Program in Oakland, California.

This collection was donated in 2023 by Kathleen Walkup, Professor Emerita at Mills College, where she held the inaugural Lovelace Family Endowed Chair in Book Art and taught classes in typography, letterpress printing, artists’ bookmaking and graduate seminars in book history and theory. At Mills College she established the first graduate program in book arts in the country in 1983. She began her printing career as part of a radical offset printing collective in Cambridge, Massachusetts, then co-founded both Five Trees Press and Peartree Printers, the first women’s letterpress trade press since the late 1800s in San Francisco. Her publishing imprints have included Matrix Press and new broom. In 2019 a solo exhibition of her printing, Transitory Matter, was held at Mills College.