knee length wedding dresses with sleeves

Is there a place in Harrisburg who specifically takes old prom dresses?
I have prom dresses (great condition/just old), bridesmaid dresses, and formal dresses.
One dress is a strapless black and a size 11. Really cool dresses. I know I should donate them. Just don't know where. knee length wedding dresses with sleeves
Any ideas?
Does "Dress for Success" take formal dresses?

Looking for recommendations in Harrisburg, Pennsylvania 2 people recommended 2 places