Think I need to file 2 4868's, one for a Canadian and one for a Swede. Neither are resident aliens but one earned money while staying with her parents last summer, the other receives a retirement and SS from US. I know I need to file an automatic extension for the second one, the first is filing to get the withholding back, don't suppose it matters if she mails it in May when she gets here. Anyway, I can't find an address for this situation though I thought they needed to be filed in Austin. Anyone have an idea? Thanks. Margaret