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Naturalization Records Index

  • This index contains naturalization records dating between the 1840s and 1970s held at the
    UW Oshkosh Archives and Area Research Center.
  • Search the index here, and request copies of the documents sent by mail.

Click here to begin your search.

Background

Naturalization is the process of becoming a U.S. citizen. Prior to 1906 and even well into the 20th century, the naturalization process was often conducted within county or local courts. Click here for details regarding the process and the records produced.

Index Includes

This index includes records for the following court systems:
  • Dodge Circuit Court
  • Green Lake Circuit Court
  • Marquette Circuit Court
  • Oshkosh Municipal Court
  • Winnebago Circuit Court

Information from the following court system will be available once its indexing is complete. You may still request records from this court by filling out this alternate request form.
  • Fond du Lac Circuit Court

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