1. copy of birth certificate of child born to the marriage
2. copy of joint Federal Tax Return 2006 and Amended Colorado State Tax Return
3. copy of dental insurance bill (showing both names)
4. copy of medical insurance card (showing both names)
5. copy of joint checking and saving bank accounts statements
6.copy of 401(k) retirement savings plan (showing each other as the beneficiary)
这些足够吗?还要什么别的材料吗?