From the record
“Charles Wolf House, also known as the Parkersburg Historical Home, is a historic building located in Parkersburg, Iowa, United States. Wolf was a native of Freeport, Illinois who moved to Parkersburg in 1875 after he, his father and brother-in-law bought the Exchange Bank.”
Wikipedia article Charles Wolf House, CC BY-SA 4.0.
One of 7 National Register listings published here for Butler County · listed in 1979 · category: Building · built in 1895, Victorian architecture.
Sources: the Wikipedia article · the case file at the National Archives · the National Register database, National Park Service