Ronald McDonald House Charities, which provides homes away from home for families with sick children, depends on hundreds of volunteers. One of them is Joe Selfridge, who works to make Ronald McDonald House Charities of the Philadelphia Region feel like a home for the families staying there. The 73-year-old retired teacher spends a lot of time driving vans back and forth to the hospital and interacting with families who stay at the Ronald McDonald House while their sick children are being treate