Dear Ms. Rubino,
Thank you for posting your request on History Hub!
If your petition was filed in a Federal court, the National Archives at New York (RE-NY) should have a copy of both the declaration and petition within their holdings, We suggest you contact RE-NY via email at firstname.lastname@example.org to request a certified copy of these records.
The Embassy of Italy in Washington, D.C., has advised the USCIS that applicants for dual citizenship are not required to provide certified copies of naturalization certificates obtained from USCIS. Instead, you must present the photocopy of the naturalization certificate along with the USCIS Genealogy Program response letter and mailing envelope.
We hope this is helpful.