springs that hold up storm windows when opened

I'm not sure what it is you might have. If these windows are truly that old, there's a good chance we won't have anything. They don't really make aluminum windows anymore and it's getting harder and harder to track anything down. You may be better off getting in touch with a local mom and pop type hardware store who are familiar with homes in your area. I've known such establishments to have older stock around, though it's a gamble.