Photographic Restoration of an old drawing

A long time ago I was trained in digital photographic restoration and have dabbled about repairing old photos ever since.  One of my good clients, Derby Cathedral, had been having a clear out in the crypt and found a wonderful old ink drawing of the cathedral tower in an old frame.  Sadly the drawing was suffering from water damage and staining . The paper had also got very crinkled.  My task was to restore this  as best I could with a view to creating fine art prints.  It took a while but here is a before and after of one of the drawings.

Derby Cathedral Tower – After

Derby Cathedral Tower – Before