Naturalizations for Jefferson County, Indiana may be found in:
- Court Order Books (See Jefferson County Court Records)
- Probate Order Books (See Jefferson County Probate Records)
- Separate naturalization volumes
Online:
Family History Library Microfilm:
- Naturalizations 1840-1850 (Circuit Court)
- Naturalizations 1853-1904 (Recorder’s Office)
Books:
- An Index to Naturalization Records in Pre-1907 Indiana County Courts. Indiana Historical Society : Indianapolis, 2001. [Amazon Affiliate Link]