Research files, correspondence, and other papers of Gerald E. Markowitz and David Rosner, public health historians, authors, and educators. Materials relate to their work teaching as well as researching the Northside Center for Child Development and mid-twentieth century issues of youth and race in New York City. Included are various reports, clippings, interview transcripts, and papers of relevant organizations and individuals.

These records document the history of the New York Chamber of Commerce and Industry, beginning with its establishment in 1768. Tracking the wax and wane of the organization's influence over the next two centuries, the collection provides a first hand account of the Chamber's many contributions to New York City and State business and development. These records exist in a wide variety of formats, such as bulletins, correspondence, minute books, and printed materials.