This mystery may get solved yet, or at least it may get some new life put into it with the help of Maureen Taylor. She specializes in identifying photos and has offered to help me. I'm waiting to hear back from her on what she wants me to do and gave her some additional information that I didn't put in my original query. She said that the first couple of photos are the most important folks to the creator of the album. If that's indeed true, and since Emma Wilhelm, my great-grandmother's sister was the 6th photo in the album, its entirely possible that the first two photos are that of her and my great-grandmother Mary, and my great-great grandfather, Henry Wilhelm. I'll keep you posted and see what happens.