Bill Anderson teaches the hand saw sharpening class at Roy's School in Pittsboro, but he's been on medical leave from the school this year. Not sure how serious his condition is. He is a member (handle willarda) so you might PM him to see if he's up to it. He is in the Chapel Hill area.
I'm pretty sure Klingspor can take them and send them out to be sharpened. Check with the store for details and to make sure my memory is good. Other's here may be able to help also.