Dictionary Catalogue of the History of Printing from the John M. Wing Foundation in The Newberry Library, 6 vols. (Boston: G. K. Hall, 1961), and supplement, 3 vols. (1970); Bibliographical Inventory to the Early Music in the Newberry Library, D. W. Krummel, ed. (Boston: G. K. Hall, 1977); List of Manuscript Maps in the Edward E. Ayer Collection, compiled by Clara A. Smith (Chicago, 1927); and A Checklist of Manuscripts in the Edward E. Ayer Collection, comp. Ruth Lapham Butler (Chicago, 1937).