From the record
“The Ringgold County Courthouse in Mount Ayr, Iowa, United States, was built in 1927. It was listed on the National Register of Historic Places in 1981 as a part of the County Courthouses in Iowa Thematic Resource.”
Wikipedia article Ringgold County Courthouse, CC BY-SA 4.0.
One of 6 National Register listings published here for Ringgold County · listed in 1981 · category: Building.
Sources: the Wikipedia article · the case file at the National Archives · the National Register database, National Park Service

