I believe that you need to submit the supported documents as well. I am attaching my list for your information, hope it might help.
1: 485 receipt;
2: 2 photos;
3: invitation letter for a conference;
4: H1B approval notice;
5: Copy of passport;
6: I140 approval notice;
BTW, what's your excuse for an emergency AP? Please share if you have any progress. Thanks!