John Springer's forthcoming Catalogue of Books on Printing featuring title page of Proposals for Printing an Exact and Ample Account of all the Books Printed by William Caxton... printed by Springer at Daily Press Office, Iowa City, Iowa - specimen sheet, 2 copies., 1879 December 10, Box: 1. John Springer Printing Ephemera Collection, MsC0202. University of Iowa Special Collections. https://aspace.lib.uiowa.edu/repositories/2/archival_objects/406775 Accessed February 11, 2025.