The New York State Archives is a unit of the Office of Cultural Education within the New York State Education Department, with its main facility located in the Cultural Education Center on Madison Avenue in Albany, New York, United States. The New York State Library and the New York State Museum are also located in the Cultural Education Center.
The New York State Archives was established in 1971 to preserve and make accessible recorded evidence documenting New York State’s history, governments, events, and peoples from the 17th century to the present. Full operations began in 1978 when the organization’s storage and research facility opened in the Cultural Education Center (CEC).
More information on the Wikipedia page 
The website is 
See also New York City Municipal Archives