California, San Francisco, World War I Enemy Alien Registration Affidavits (FamilySearch Historical Records)Edit This Page

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Revision as of 22:51, 4 November 2013 by Dennamartineau (Talk | contribs)
FamilySearch Record Search This article describes a collection of historical records available at


Record Description

The collection consists of Registration Affidavits of people from counties at war with the United States. The records were acquired from the the San Francisco Public Library. This collection is being published as images become available.

Record Content

Information in the Registration Affidavits generally include the following:
  • Full Name of applicant
  • Date Registration was Filed
  • Address when registered
  • Age
  • Physical description
  • Photo
  • Married or not
  • Been in Military
  • Number of Children (If married)
  • Children's Gender
  • Finger prints

How to Use the Record

To begin your search it is helpful to know the following:

  • Name
  • Date registration was filed
  • Place of residence when registering

Search the Collection

To search the collection by name fill in your ancestor’s name in the initial search page. This search will return a list of possible matches. Compare the information about those in the list to what you already know about your own ancestors to determine if this is the correct family or person.

To search the collection image by image
⇒Select "Browse through images" on the initial collection page
⇒Select the appropriate "Digital Folder Number" which takes you to the images.

Look at the images one by one. Again you will need to compare the information with what you already know about your ancestors to determine which one is your ancestor.

Be aware that with either search you may need to compare the information about more than one person to make this determination. Keep in mind:

  • There may be more than one person in the records with the same name.
  • You may not be sure of your own ancestor’s name.
  • Your ancestor may have used different names or variations of their name throughout their life.

For tips about searching on-line collections see the on-line video at FamilySearch Search Tips.

Using the Information

When you have located your ancestor’s record, carefully evaluate each piece of information given. Make a photocopy of the record, or extract the genealogical information needed. These pieces of information may give you new biographical details. Add this new information to your records of each family. The information may also lead you to other records about your ancestors. The following examples show ways you can use the information:

  • Use the names and relationships as a basis for compiling family groups.
  • Use the name and address or residence to locate the individual on the census.
  • Use the age listed to determine an approximate birth date.

Tips to Keep in Mind

  • You may need to compare the information of more than one family or person to make this determination.
  • These individuals may have later filed to become naturalized citizens.
  • If you are unable to find the ancestors you are looking for, check for variant spellings of the names.

Related Websites

San Francisco Public Library 

Related Wiki Articles

San Francisco County, California

Contributions to This Article

We welcome user additions to FamilySearch Historical Records wiki articles. We are looking for additional information that will help readers understand the topic and better use the available records. We also need translations for collection titles and images in articles about records written in languages other than English. For specific needs, please visit WikiProject FamilySearch Records.

Please follow these guidelines as you make changes. Thank you for any contributions you may provide.

Citing FamilySearch Historical Collections

When you copy information from a record, you should also list where you found the information. This will help you or others to find the record again. It is also good to keep track of records where you did not find information, including the names of the people you looked for in the records.

A suggested format for keeping track of records that you have searched is found in the wiki article Help:How to Cite FamilySearch Collections.

Citation for This Collection

The following citation refers to the original source of the information published in Historical Record collections. Sources include the author, custodian, publisher, and archive for the original records.

"California, San Francisco, World War I Enemy Alien Registration Affidavits, 1918." Index and Images. FamilySearch. : accessed 2013. Citing County Clerk. San Francisco Public Library, History and Archives.

Suggested citation format for a record in this collection.


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