I thought this would be of interest for those having an interest, or doing research, on the modern history of New York City:
The Downtown Lower Manhattan Association (DLMA) archives are now open for public research.
The archives were acquired by the Rockefeller Archive Center in 2000. The collection includes 85.5 cubic feet of archival material and about 2,000 photographs, according to an announcement in the Feb. 2008 issue of Benchmarks, the community newsletter of Rockefeller University.
The nonprofit DLMA, founded by 1958 by David Rockefeller, helped plan and build Battery Park City, the South Street Seaport and the World Trade Center.
More information about the archive is available. Questions about the collection can be addressed to Senior Archivist Robert Battaly, firstname.lastname@example.org. The archives are located in Sleepy Hollow, NY, and appointments are required.
Last month I contacted the archives by email for a research question relating to an event that occurred at the Rockefeller Institute in the 1918-1920 period and the assistance received was extremely helpful and answered the question.