The following institutions and organizations may provide assistance in genealogical matters. Most charge a fee for services provided. None is affiliated with the Old Dutch Church or its burying ground.

In New York State, birth and death certificates and marriage licenses are filed with township government. Contact town clerks or NYS Bureau of Vital Statistics for copies of those documents. For example, if you seek a record of a marriage in the village of North Tarrytown (now Sleepy Hollow) in 1949, you would need to contact the Town of Mount Pleasant.

Village of Sleepy Hollow
  

Incorporated as North Tarrytown in 1874, the village changed its name to Sleepy Hollow in 1996. This village is located in the township of Mount Pleasant.
Village Clerk, 28 Beekman Avenue, Sleepy Hollow, NY 10591 www.sleepyhollowny.org 914-631-0533

Town of Mount Pleasant
  

May have records of vital statistics for individuals who resided in what is now Sleepy Hollow (formerly North Tarrytown). Some of its records predate the incorporation of the village of North Tarrytown in 1874.
1 Town Hall Plaza, Valhalla, NY 10595 www.mtpleasantny.com 914-742-2300

Village of Tarrytown

Incorporated in 1870. This village is located in the township of Greenburgh.
Village Clerk, 21 Wildey Street, Tarrytown, NY 10591
 www.tarrytowngov.com 914-631-1652

Town of Greenburgh

May have records of vital statistics for individuals who resided in what is now Tarrytown. Some of its records predate the incorporation of the village of Tarrytown in 1870.
Town Clerk, 177 Hillside Avenue, Greenburgh, NY 10607
 www.greenburghny.com 914-993-1500

New York State Bureau of Vital Statistics

Birth, death, and marriage records, after 1881.
 www.health.state.ny.us/nysdoh/vr/forms/genealogy.htm

Westchester County Archives and Records Center

Holds deeds, wills and estates, naturalization records, and veteran records from 1680 to present.
 www.westchesterarchives.com 914-231-1500

Westchester County Historical Society

Its collection includes papers of many Westchester families, genealogical files, colonial and federal census records, maps, and much more. Holds records from 1680 to present.
 www.westchesterhistory.com 914-592-4323

Historical Society Serving Tarrytown and Sleepy Hollow

Its library contains a collection of local publications.
1 Grove Street, Tarrytown, NY 10591 
914-631-8374

Westchester County Genealogical Society

Facilitates sharing and exchange of local information.
P.O. Box 518, White Plains, NY 10603-0518 
www.rootsweb.com/~nywcgs/

Random Acts of Genealogical Kindness

For those unable to travel to distant archives, local volunteers will research genealogical records.
 www.raogk.org

Cyndi’s List of Genealogy Sites on the Internet

An extensive, cross-referenced list of genealogical resources.  www.cyndislist.com

NYGenWeb - Westchester County, NY

Identifies regional resources for those researching family history.  www.rootsweb.com/~nywestch/index.htm

National Archives and Records Administration, Northeast Region

Federal records including census, military, courts, immigration, and much more.
201 Varick Street, 12th Floor, New York, NY 10014 
www.archives.gov

Church of Jesus Christ of Latter Day Saints, Family History Center

Local center provides access to most of the microfilms and microfiche in the main LDS Family History Library.
801 Kitchawan Road, Yorktown Heights, NY 10598 
914-941-9150 
www.familysearch.org