Well, my scanning is now complete of the old photos, and I have turned to editing them. The original is fading, but the edited photo of my great grandmother Alma and her kids (Linda, Matt), was restored to how it looked in circa 1910 when it was taken.
Look at those details that I was able to bring out. you can see the strands of hair and the detail on the dress. I also did an edit of the marriage photo that was previously posted.
To do this sort of work, I recommend scanning in the photos in RAW mode at very high resolution (4800 dpi). I did detail enhancement with some HDR tools, but the majority of the retouching was done in Photoshop.