Italian Genealogical Group – https://www.italiangen.org/
Promotes Italian family history but has indexed all records (including Jewish) for most years through 1949. It also contains searchable databases for New York City and New Jersey naturalizations, births, deaths, and marriages. It provides dates, borough, and certificate numbers for further research.

New York City Vital Records – https://portal.311.nyc.gov/kacategory/?id=311-15
The Municipal Archives has records of births reported in the five Boroughs of New York City (Manhattan, Brooklyn, Bronx, Queens and Staten Island), prior to 1910; deaths reported prior to 1949, and marriages reported prior to 1930.

New York City Historical Vital Records – https://a860-historicalvitalrecords.nyc.gov/
Birth, death and marriage records in NYC.

New York City Marriage Index – https://www.nycmarriageindex.com/
Marriage licenses filed in New York City between 1950-2017.

A Guide to New York Historical Resources – https://www.areavibes.com/library/new-york-historical-resources/
New York has historically been the central place for immigration thanks to Ellis Island, which has created a genealogical web that connects with citizens in every other state in the US. Use these resources to find death, birth and marriage certificates. Locate your ancestor’s military records or census data, in addition to copies of historic newspapers and family histories. Note: The actual images are available free using the Italian Genealogical Group database for certificate numbers.

Jewish Genealogical Society of New York – https://jgsny.org/
The Jewish Genealogical Society, Inc. (JGS) was founded in New York in 1977 and contains 235,000+ name index to Brooklyn (Kings County) naturalization records, a searchable database of the names and cemetery locations of all Jewish burial society [landsmanshaftn] plots in the New York metropolitan area, and indexes of Landsmanshaften records from YIVO, WPA records, Jewish Communal Register, and the American Jewish Year Book.

Jewish Genealogy Society of Long Island – https://jgsli.org/
JGSLI was founded in 1985 to encourage and assist the pursuit of Jewish family history. Our goal is to bring together people interested in tracing their Jewish family roots.

Jewish Genealogical Society of Brooklyn – http://www.jgsob.org/index.html
The goal of the Jewish Genealogical Society of Brooklyn is to collect, preserve and disseminate knowledge and information regarding Jewish genealogy.

New York Genealogical and Biographical Center – https://www.newyorkfamilyhistory.org/
The NY Genealogical and Biographical Center’s (NYG&B) mission is to preserve, document, and share family history and stories from across New York State. Their records collections contain county histories, immigration records, indexes for New York State and city vital records, birth and death indexes, obituaries index, religious records, vital record substitutes, information on veterans buried in New York, WPA Historical Records, and the complete digital archives of The NYG&B Record.

New York Public Library – https://www.nypl.org/about/divisions/milstein/genealogy
The New York Public Library (NYPL) offers extensive genealogical resources, including online databases, local history materials, and access to vital records, census records, city directories, family histories and periodicals, military records, land records, historical New York City newspapers, and naturalization records. It houses the collection of the New York Genealogical and Biographical Society and provides access to resources like city directories, family histories, and photographic collections.