From the record
“Thomas House is a historic house located on North Virden Road near Virden, Illinois. The house was built in 1863-65 for agriculturalist Lewis H.”
Wikipedia article Lewis H. Thomas House, CC BY-SA 4.0.
One of 13 National Register listings published here for Montgomery County · listed in 1983 · category: Building.
Sources: the Wikipedia article · the case file at the National Archives · the National Register database, National Park Service