The Milano School of International Affairs, Management and Urban Policy collection consists of administrative, promotional, and curricular materials, as well as publications by Milano faculty and researchers, and materials from Milano-sponsored events. The collection covers over fifty years in the history of the school, from its roots in the Center for New York City Affairs, which was founded in 1964, to the 2010s. The material in this collection is in a variety of formats: paper records, electronic files, and audiovisual recordings.

The collection is organized into four series: General, Center for New York City Affairs, Community Development Research Center, and Graduate Program in International Affairs.

The first series, General, contains administrative files, promotional material, handbooks, program assessments and development plans, and files related to faculty and staff. Reports, events, and conferences hosted by Milano, but not by a specific program within the school, are in this series. Also included are files from the Community Development Finance Lab, a Milano course that pairs students with community organizations, and the Milano Mangement Information Exchange (Milano MiX), a resource developed by Milano for community development corporations. The series includes electronic files from the offices of the Dean and Associate Dean for Student Affairs. Additionally, audiovisual material, including some event recordings and promotional videos, are found in this series.

The second series is material from the Center for New York City Affairs (CNYCA), the founding program of Milano. It includes course catalogs, promotional material, and publications. Materials from events hosted by the CNYCA include programs, photographs, and planning documents from the annual Fiorello H. La Guardia Awards Dinner, which honored individuals who made significant contributions to New York City. A recording of the dinner at which former President Bill Clinton received the award is also included. This series also includes issues of CNYCA's publication. The Fiscal Observer or City Almanac.

The third series covers the work of Milano's Community Development Research Center (CDRC), an interdisciplinary research center focused on low-income urban neighborhoods. The bulk of this series consists of published reports sponsored by the CDRC. Assorted other documents include a program brochure, project summaries, and a grant application.

The fourth series contains documents from the Graduate Program in International Affairs (GPIA), which was established in 2001. As of 2019, this program is now known as the Julien J. Studley Graduate Programs in International Affairs, and is organizationally separate from Milano within the Schools of Public Engagement. This series includes promotional material, and administrative and curricular files. The bulk of this series is material from events and conferences sponsored by the GPIA. Also included is material from the Observatory on Latin America, a GPIA program that hosts events and conferences that foster understanding of and dialogue with Latin American countries.

The fifth series consists solely of a few copies of two newsletters issued by the Office of Student Affairs, GSMUP News Brief and GSMUP Newsletter.