Discover Mom's Citizenship Date

I need help finding the date my mother became a US citizen. I don't have any documents, but I know the approximate time period.

Requirements

- Experience with immigration and naturalization records - Ability to conduct thorough research - Access to relevant databases or archives - Detail-oriented and reliable Ideal Skills: - Background in genealogy or history research - Familiarity with US citizenship processes - Strong investigative skills Please provide a timeline and method for your search.