From the record
“The Roswell and Elizabeth Garst Farmstead Historic District is a farm in Guthrie County, Iowa, United States, near the city of Coon Rapids. It is significant as the home of farmer and hybrid corn populizer Roswell Garst.”
Wikipedia article Roswell and Elizabeth Garst Farmstead Historic District, CC BY-SA 4.0.
One of 8 National Register listings published here for Guthrie County · listed in 2009 · category: District.
Sources: the Wikipedia article · the case file at the National Archives · the National Register database, National Park Service