急问，小白兔, pjiang, 及各位高人

my application was returned asked to re-submit with my husband\'s I-797 receipt notice. My problem is that I should submit to previous adress:
USCIS Nebraska Service Center
P. O, Box 87485
Lincoln, NE 68501-7485.

or I should send to where the return letter from:
US Department of Homeland Security
P. O. Box 82521
Lincoln, NE 68501-2521

In the return letter, they just I can re-submit this application with their letter. But, they did not mention where I re-submit to.

Many thanks!