Beautiful Portraits of Children, but Who are They?

Among the photo collection I inherited from my grandmother Mollie (Mrs. John) Margheim, I found these portraits of children. None of them are identified and I don't recognize any as immediate family members. They were probably children in the 1920s, 30s or 40s. My grandparents lived in Russell and Trego Counties in Kansas and were of Volga German descent. 

I don't expect anyone to identify these kids, but do you think any of them are duplicated? Do you think any of the pictures have the same children in them? Familiar names in my grandmother's collection were Koleber, Margheim, Maier, Schwein, Schneider, Koch, Dietz and Deines.

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Unidentified Families

I've recently been scanning photos I retrieved from my Dad's house as I was relocating his bedroom. Among the known family portraits were these beautiful photographs. My dad does not know the identities of anyone in these pictures. Since my Dad's family were German immigrants from Russia who settled in Kansas (Trego, Russell and Barton Counties), I assume these families are also Germans from Russia who were probably friends of my Dad's Margheim family. I don't expect anyone who reads my blog to identify these people, but I posted them anyway to give them honor.