I have a very strong feeling that they are Wilhelms. My only clue that leads me to lean toward that family of mine is the one photo that I did ID, that being the one marked 'Emma Wilhelm'. That is the name that is written in pencil on the bottom (it was very faint but I was able to make the name out). She is my great-grandmother's sister. Also the first picture in the album is of two little girls, wearing matching dresses and the one on the right looks a little bit like that of Emma Wilhelm.
I also have Emma's picture on my facebook page in an album there where you can see the name in pencil at the bottom. None of my Wilhelms are alive to help and I'm hoping someone can ID at least one photo if not more. Hope you can help.