From the record
“The Carstens Farmstead is a collection of historic buildings located south of Shelby, Iowa, United States. Johan Carstens was a German immigrant who spent eight years living and working in Milwaukee, Chicago, and Davenport, Iowa before settling in Pottawattamie County in 1871, where he established this farm.”
Wikipedia article Carstens Farmstead, CC BY-SA 4.0.
One of 43 National Register listings published here for Pottawattamie County · listed in 1979 · category: Building.
Sources: the Wikipedia article · the case file at the National Archives · the National Register database, National Park Service



