As https://travel.state.gov, mentions:
You must apply in person using Form DS-11 if [...] You are applying for your first U.S. passport.
When applying in person for a US passport using Form DS-11, can one keep the original certificate of naturalization while waiting for the US passport?
My research so far left me confused:
You do not need to submit your original naturalization certificate. You only need to show it at the acceptance facility.
Form DS-11 surprisingly doesn't seem to mention what proof of US citizenship a naturalized US citizen born outside the US and without US parents should bring:
DS-11 does point to https://travel.state.gov/citizenship, which indicates:
Submit your original evidence of U.S. citizenship. Submit a photocopy of the front (and back, if there is printed information) of your original evidence of U.S. citizenship. [...] Examples of Primary Citizenship Evidence: [...] Certificate of Naturalization.
Submitting one's certificate of naturalization seems to imply that one cannot keep one's original Certificate of Naturalization while waiting for the US passport, which contradicts risccmke.org.
DS-11 mentions (as can be seen in the screenshot above):
Submit an original or certified copy and a photocopy of the front and back.
but I don't know if this applies to Certificate of Naturalization as well. I.e., I don't know if one may submit a certified copy of one's certificate of naturalization (so that one could keep one's original Certificate of Naturalization while waiting for the US passport).