Abstract: The Brooklyn Bridge was built over a thirteen year span beginning in 1869. This extensive collection contains the architectural plans and drawings created during the design, planning and construction stages for the suspension bridge by Civil Engineer, John Augustus Roebling, and includes drawings by his son Washington A. Roebling. The bridge officially opened in 1883.

Abstract: The Department of Buildings requires the filing of applications and supporting material for permits to construct or alter buildings in New York City. This collection contains the plans and drawings filed with the Department of Buildings between 1866-1978, for the buildings on all 958 blocks of Lower Manhattan, from the Battery to 34th Street, as well as a small quantity of material for blocks outside that area.

Abstract: This collection consists of materials created by the New York City Department of Housing Preservation and Development. Materials are primarily visual in nature and relate to the agency's programs and events and their work in affordable and supportive housing. Material includes, negatives, slides, photographic prints, press releases, agendas, contacts sheets, memoranda, pamphlets.

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.