Skip to main content

Genealogy: Immigration & Naturalizations

Finding Published Records in Library Catalogs

  • naturaliz* court* delaware
  • naturalization records
  • naturalization records Pennsylvania Philadelphia

Search for the name of the place which had a court with the authority to process naturalization applications, not the place where the person lived.

The asterick * in the example is a truncation symbol. Using it at the end of a word allows you to retrieve variations of the word without having to type them all in. For example, naturalization* will find the words: naturalization and naturalizations. naturaliz* will find: naturalization; naturalizations, and naturalize.


Family History Library Catalog (FamilySearch) has a search by place feature.

Naturalization Records

Naturalization Petition (Second Paper). John Casey of Ireland.  Delaware Public Archives, Digital Archives, Documents, in New Castle County Naturalizations. New York, Petitions for Naturalization, 1794-1906 [database on-line]. National Archives at New York City; County Court of Kings County.

Prior to 1906, any "court of record" (municipal, county, state, or federal) could grant citizenship. In 1906, the federal government assumed responsibility for naturalization and citizenship.

For more information about naturalization, see

in The Source: A Guidebook to American Genealogy

Where to Find Records

Subject Librarian

Rebecca Knight's picture
Rebecca Knight
Associate librarian
Reference and Instructional Services Department
Morris Library, Room 117H

Subjects: U.S. Government Information,
Delaware, census, family studies, RefWorks, APA style, and genealogy.

B.A., History. University of North Carolina, Chapel Hill. 1973.
M.S., Library Science. University of North Carolina, Chapel Hill. 1981.