I'm no accountant, but I think you can give up to $13k per person per year with no taxes due. So for a family of 4 spread over 2012 and 2013, this would be $104K.
Very noble gesture by the way. With all the theft and violence committed these days, this thread is a breath of fresh air. My neighbor is very involved with the local Rotary club, this is what he posted on Facebook earlier today. I would be happy to put you two in touch.
"If you want to help out victims of Sandy you can drop off unopened food, first aid, clothes (esp: underwear), cleaning products, wipes & dipes at my office today or take it right to the Merion Fire Company in Ardmore. My Rotary club sent one truck to Tom's River Tuesday and another one tonight."