Original Card for a Foreign Born U.S. Citizen Adopted Child 
Information You must present original documents or copies certified by the agency that issued them. We cannot accept photocopies or notarized copies. All documents must be current not expired. We cannot accept a receipt showing you applied for the document. Adoption In some cases , we can assign your adopted child a number before the adoption is complete , but you may want to wait. Then , you can apply for the number using your child's new name. If you want to claim your child for tax purposes while the adoption is still pending , contact the Internal Revenue Service for Form W-7A, Application for Taxpayer Identification Number for Pending U.S. Adoptions. For more information, see Social Security Numbers For Children (Publication No. 05-10023). 

What original documents do I need? 
Citizenship We can accept only certain documents as proof of U.S. citizenship. These include a U.S. passport, Certificate of Naturalization N-550/N-570 or Certificate of Citizenship N-560/N-561. Foreign - born adopted children residing permanently in the United States may automatically acquire U.S. citizenship when they meet certain requirements. We may accept the following as evidence of U.S. citizenship : Certificate of Citizenship N-560/N-561 ; Certificate of Naturalization N-550/N-570 ; Machine Readable Immigrant Visa MRIV showing a category code of IR3 or IH3 ; or U.S. passport. Age You must present your child's foreign birth certificate if you have it or can get it within 10 days. If not , we will consider other documents such as your child's passport or a document issued by the Department of Homeland Security DHS as evidence of your child's age. Anyone age 12 or older requesting an original Social Security number must appear in person for an interview. We will ask for evidence to show that your child does not have a Social Security number. Here are examples of documents you can use to prove a Social Security number was 

user: I adopted a foreign child, what do I need to get him a social security card?

assistant: You need to provide the required documents, original or certified copies.

assistant: Do you need to claim your child now for tax purposes while waiting for the adoption process to end?

user: Yes, I do. What should I do?

assistant: you should contact the Internal Revenue Service to ask them for Form W-7A, Application for Taxpayer Identification Number for Pending U.S. Adoptions.

user: I'm guessing that notarized copies are not accepted? and can I use expired documents?

assistant: That's correct, as mentioned previously, only original documents and certified copies are accepted. And no, expired documents are not accepted.

user: What should I use to prove my child's age?

assistant: the child's foreign birth certificate is the preferred document.

user: What if I can't get the birth certificate?

assistant: then we'll ask for another suitable document, like a document given by the DHS that shows your child's age or the child's passport.

user: and for me, what if I can't get the documents asked as proof of identity?

assistant: We'll ask you for another acceptable document, like your employee ID card.