I am hoping someone with experience in French Naturalization can assist.

I have 3 different documents with 3 different dates for my family's Naturalization.

The first one is        Record of the 3rd of September 1899 which lists my great grandfather only. Numéro de décret: Bulletin Nº 3365 Décret Nº 57354

The second one is  Record of the 25th of September 1901 which lists my great grandfather, great grandmother and 4 children, one of whom was born in France.   Numéro de décret: Bulletin Nº 3548   Décret Nº 63216

The third on is        Record of the 9th of December 1901 which lists the 4 children only, including the one born in France.  Numéro de décret: Bulletin Nº 3561 Décret Nº 63580

My questions are: 1) Why are there 3 dates and apparently 3 files?
                              2) Does this mean if I want the files for the Naturalization I need to ask for 3 separate files?
                              3) I live in the USA and I read nor speak French. Would it be best for me to hire a researcher to retrieve these files?

Thank you in advance.
Fran Stark-Hundiak
Michigan USA