I already have too many old machines. Four of them were given to me within a few months. But my plan is to donate them (or at least some of them) to the Sewing Machine Project. I think they are headquartered in Madison, WI. They take machines that work and send them to places that need them. After Katrina, they took thousands of machines to Louisiana. There are still some going there.
They take any age machine; old or new, but it has to work. And books and attachments are nice, too.
My Delta Rotary seems to work, but I can't for the life of me figure out how to thread it. If I get a book, I hope I will learn how, but I can't send something like that without directions for threading.