Files relating to the research and writing of the historian Frank Monaghan. Alexander Hamilton Bicentennial Commission Papers are files for 1954-1955 and 1960. These consist of Monaghan's correspondence with historians, archivists, and others concerned with the work of the Commission. In addition to Monaghan's bibliographical notes and his notes on Hamilton's correspondents, there are typescript copies of letters between Aaron Burr, Alexander Hamilton, and their seconds preceding their duel, and an incomplete series of typescript copies of excerpts from Hamilton's letters illustrating his thoughts on individuals and concepts for names and concepts beginning with the letters M and N. Also, several papers written by others and submitted to Monaghan. The John Jay Files include numerous typescript copies of letters to and from John Jay. The Frank Monaghan Files include correspondence, notes, and drafts of the first chapter of Monaghan's book JOHN JAY, DEFENDER OF LIBERTY.

The New York World's Fair of 1939 and 1940, was held in Flushing Meadows in the Borough of Queens. The non-profit Fair corporation was formed in 1935 under the guidance of business and civic leaders, and financed through federal, state, municipal and private funds. The Fair commemorated the 150th anniversary of Washington's inauguration in New York City and took "Building the World of Tomorrow" as its central theme. Participants included close to 60 nations, 33 states and U.S. territories, and over a thousand exhibitors, among them some of the largest corporations in the United States. The records of the New York World's Fair 1939-1940 Incorporated present a comprehensive view of all aspects of the Fair including construction, maintenance and demolition of Fair facilities; planning and development; architecture and landscaping; displays and exhibits; government participation; publicity and public relations; amusements, entertainment and concessions; legal and financial affairs; the import and export of goods; labor relations; and public safety and welfare. In addition to correspondence and memoranda, the collection consists of reports, minutes, financial and legal records, architectural plans, design drawings, sound recordings, brochures, leaflets, press releases and other promotional materials, notably over 12,000 photographs of the Fair, its exhibits and visitors.