United States, Index to Alien Case Files - FamilySearch Historical Records

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United States

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United States Index to Alien Case Files, 1940-2003
This article describes a collection of records at FamilySearch.org.

United States
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Record Description
Record Type Alien Case Files Index
Record Group RG 566: Records of U.S. Citizenship and Immigration Services
Collection years 1940-2003
National Archives Identifier 5821836
FamilySearch Resources
Related Websites
National Archives and Records Administration

What is in This Collection?[edit | edit source]

This collection consists of the Index of Alien Case Files housed at the National Archives Regional Office in Kansas City, Missouri. Under the Alien Registration Act of 1940, immigrants in the United States were required to register and be fingerprinted. The Immigration and Naturalization Service (INS)—now the U.S. Citizenship and Immigration Service (USCIS)—drew upon the 1940 Alien Registration Form (AR-2) to create Alien Case Files beginning in 1944. Immigrants recorded in these files come from all over the United States. Some files from aliens living in the immigration districts of Guam; Honolulu, Hawaii; Reno, Nevada; and San Francisco, California are housed in the National Archives Regional Office of San Bruno, California and may not be included in this index. The Affiliate Record Number refers to the Alien Registration Number. For additional information on the alien case files click on the link below for NAID 4488912. National Archives Catalog

Alien Registration Forms, 1940-1946 - National Archives

Alien Statements, 1942-1946 - National Archives

Image Visibility[edit | edit source]

Whenever possible FamilySearch makes images and indexes available for all users. However, rights to view these data are limited by contract and subject to change. Because of this there may be limitations on where and how images and indexes are available or who can see them. Please be aware some collections consist only of partial information indexed from the records and do not contain any images. For additional information about image restrictions see Restrictions for Viewing Images in FamilySearch Historical Record Collections.

What Can These Records Tell Me?[edit | edit source]

The following information may be found in these records:

  • Alien registration Number (Affiliate Record Identifier)
  • Last Name
  • First Name
  • Alias
  • Date of Birth
  • Sex
  • Date of Entry
  • Country of Birth
  • Father's Name
  • Mother's Name
  • Naturalization Date
  • Naturalization Court
  • Naturalization Location

Collection Content[edit | edit source]

Sample of indexed information:

John Smith United States Index to Alien Case Files
Name John Smith
Event Type Immigration
Event Date 20 May 1914
Birth Date 18 Sep 1892
Birth Country Finland
Arrival Place New York, Ny
Mother's Name Smith

How Do I Search This Collection?[edit | edit source]

To begin your search, it is helpful to know:

  • The full name of your ancestor
  • The approximate date of registration or date case file was created

Search the Index[edit | edit source]

Search by name on the Collection Details Page.
  1. Fill in the search boxes in the Search Collection section with the information you know
  2. Click Search to show possible matches

How Do I Analyze the Results?[edit | edit source]

Compare each result from your search with what you know to determine if there is a match. This may require viewing multiple records or images. Keep track of your research in a research log.

What Do I Do Next?[edit | edit source]

I Found the Person I Was Looking For, What Now?[edit | edit source]

Use passenger lists to:

  • Learn an immigrant’s place of origin
  • Confirm their date of arrival
  • Learn foreign and “Americanized” names
  • Find records in his or her country of origin such as emigrations, port records, or ship’s manifests
  • Remember, this index is a link to the National Archives database at their Regional Office in Kansas City, Missouri
  • If your ancestor had a common name, be sure to look at all the entries for a name before you decide which is correct
  • Continue to search the record to identify siblings, parents, and other relatives in the same or other generations who may have immigrated at the same time
  • If your ancestor has an uncommon surname, you may want to obtain the record of every person who shares your ancestor’s surname if they lived in the same county or nearby. You may not know how or if they are related, but the information could lead you to more information about your own ancestors
  • Add any new information to your records

I Can't Find the Person I'm Looking For, What Now?[edit | edit source]

  • Look for variant spellings of the names. You should also look for alias names, nicknames and abbreviated names
  • Try alternative search methods such as only filling in the surname search box (or the given name search box) on the landing page leaving the other box empty and then click on search. This should return a list of everyone with that particular name. You could then browse the list for individuals that may be your ancestor
  • Search the immigration indexes and records of port cities for your ancestor's year of immigration. If you do not know the year of immigration, search federal census records after 1900

Research Helps[edit | edit source]

The following articles will help you research your family in the United States.

Other FamilySearch Collections[edit | edit source]

These collections may have additional materials to help you with your research.

FamilySearch Catalog[edit | edit source]

FamilySearch Historical Records[edit | edit source]

FamilySearch Digital Library[edit | edit source]

Citing This Collection[edit | edit source]

Citations help you keep track of places you have searched and sources you have found. Identifying your sources helps others find the records you used.

Collection Citation:
The citation for this collection can be found on the Collection Details Page in the section Citing this Collection.
Record Citation:
When looking at a record, the citation can be viewed by clicking the drop-down arrow next to Document Information.