Perfect, if you need more information about this issue, you can look for the Publication Nº 05-10023, which can answer your possible questions about Social Security Numbers for Children.
Thanks, i'll look for it when i can. Please, i have another doubt. Do i need to present any document as child's parent?
Indeed, you need to do that. We need to see a proof of your identity as child's parent. That document must be valid and containing your date of birth or age as well a recent photograph.
Oh, i see. I better write that down. Please, you said before that the publication i need to look for is which number?