The Newberry Library's institutional records, records of the Walter L. Newberry estate, personal papers of staff members and trustees, photographs, and publications that document the establishment and operation of the library, its growth and transformation over time, and its active participation in the cultural and intellectual life of Chicago and the nation. Also information on the Newberry family and property development in Chicago.

Contains correspondence, documents, diaries, scrapbooks, research matter, and photographs. The papers include correspondence, financial, and legal documents of William B. Greenlee and focus on Greenlee's Portuguese collecting activities and scholarly work.