The Atlanta mission assists with those things, they'll write you a proof of residence letter to obtain your I.d and they'll allow you to receive mail too.
You will have to go to gate way to help you with that. Our House is for family that have an infant that's the only way you can get in there. I know if you are receiving Food Stamps. That the welfare office let people that are homeless use their address to get important documents or mail there.
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