Searching Citizenship Records or Passport Records

[Randy Pimentel]

Hi all,

I'm wondering if anyone has any resources to search for citizenship records or passport records? Basically, There is are some ancestors that were born in the US but we believe they might have gotten citizenship shortly after being born. 

This was probably done around 1910s or 1920s.

Does anyone have any resources I can use in my search?

Thank you!

Randy