Thank you, that's the right family, and I will explore other parts of that extensive website. Charles and Minna had a general store in Thorp, so another project will be searching for photos and descriptions of that.
I should mention that George Albert later married Grace Greiner of Mayville, so she became [another] Grace ALBERT in 1908. She was born in Bavaria in Aug. 1888, close in age to the other Grace ALBERT, and she is definitely not the 12-year-old living in Thorp in 1900.