USCIS
Nebraska Service Center
P.O. Box 87765
Lincoln, NE 68501-7765
2. 除了上一個EAD approval notice, 要不要附485收據
http://blog.wenxuecity.com/blogview.php?date=200706&postID=42162#EADlist
3. 最近大致多久能批
http://blog.wenxuecity.com/blogview.php?date=200708&postID=13475#TimeFrame