The Schmidts began finding fossils and Native American artifacts in 1910 when the family started homesteading in the Grand River Valley. Their Old West collection grew with their love of the land, and in 1998 they led an effort to start a history center in Lemmon. Today the Grand River Museum has exhibits on Hunkpapa leaders like Sitting Bull and Rain in the Face. It has a timeline for creation science, as well as photographs and films about ranching and early cowboys including town founder Ed “Boss Cowman” Lemmon. The nonprofit museum also has a big gift shop that includes an impressive inventory of West River literature.