Naturalization Records are very important to your genealogy research. They can help you find the date, ship, port of arrival, and the place of birth for your ancestor.
You will find Naturalization information on census records. The 1900, 1910 ,1920 and 1930 American census identify citizenship status, with notations showing the individual was an Alien,or had started the Naturalization process or had his final
* PA means he had started his first papers
* NA means he was naturalized
* AL means he was still an alien (not naturalized)
Remember that the years of immigration and naturalization are the most MISremembered years so allow a year or two on either side of any date you find in the Census.