I would think a large church that had not been hit would be the best place. First off, the quilts are about 100% assured to get to the folks you made them for. Ok, I know this sounds rather 'nasty' - but people being people might just want to take the better ones home for themselves. YOu are alot less ikely to have this happen when the quilts are mailed to a church.
You can find a church by looking online at the city you want tohelp out. Put into google.com Churches in Joplin MIssouri as an example.
My daughter's church is Friendship Methodist in Athens AL.
Julie