Guides to Historical Records
New York State Archives and Statewide Guides
County
Guides
In 1978, the New York Historical Resources Center at Cornell University
initiated the Historical Documents Inventory (HDI) to survey the holdings
of New York’s publicly accessible archives and manuscript repositories.
The survey results were carefully edited and compiled into 62 county level
guides. The guides contain contact information and summary collection
descriptions for more than 1200 repositories located throughout the State.
You can order paper copies of the guides or search the HDI
records through Excelsior, the on-line catalog of the New York State
Archives. Holdings for Nassau County and new and updated records are only
available on-line.