Looking at the photo, does look like needs restuffing.
If that is the original upholstery or even very old replacement leather, even if you could find someone, I would think this is a specialized service, it might get very costly being a conserve job not replace. The old upholstery would have to come off and be restuffed then reinstalled. All that stretching of old or dried out leather, really in my OP would not end well. I suggest posting this question on the AACA or HCCA sites, they would be more in tune with this kind of work or even try Model T Ford Club of America.