New York Naming Customs
Many name changes in New York are listed in the court record index for New York County (New York), County Clerk, Miscellaneous Filed Papers Index, 1812–1934 (Salt Lake City, Utah: Genealogical Society of Utah, 1977; Family History Library films 1002909–25).
Also see Kronman, Barbara. The Guide to New York City Public Records, Fourth Edition. New York, New York: Public Interest Clearinghouse, 1992. (FS Library book 974.71 A3k.) Includes chapters on city government, courts, libraries, and personal information. Shows how to obtain vital records, name change records, and naturalizations.