Abstract: Robert Abrams served as the ninth Borough President of the Bronx from 1970 to 1978. This collection primarily contains the material generated by the daily workings of the Office of the Bronx Borough President during his tenure. Also included are records produced by Abrams as a member of the New York State Assembly (1966-1969) and, later, as the Attorney General of New York State (1979-1993).

Abstract: Edward F. Cavanagh served as Commissioner of the Department of Marine and Aviation from 1950 through 1953. This collection contains one scrapbook of news clippings documenting the work of the department during his tenure.

Abstract: John F. Hylan was the 96th Mayor of New York City from 1918 to 1925. This collection contains the material generated by the daily workings of the Office of the Mayor during his two-term mayoral administration.

Abstract: John P. Mitchel was the 95th Mayor of New York, serving during the World War I era from 1914-1917. This collection consists of the records produced by the Office of the Mayor during his administration.

Abstract: Robert Anderson Van Wyck (1849-1918) was the first Mayor to take office after the consolidation of the City of New York in 1898. This collection consists of the subject files and correspondence of his administration.

Abstract: William Jay Gaynor served as the 94th Mayor of the City of New York from 1910 to 1913. This collection contains the material generated by the daily workings of the Office of the Mayor during his mayoral administration.

Abstract: William O’Dwyer was the 100th Mayor of New York City from 1946-1950. This collection predominantly contains the material generated by the daily workings of the Office of the Mayor during his administration.