From the record
“The Lemmon Petrified Wood Park & Museum is a roadside attraction located off U.S. 12 in Lemmon, South Dakota, which features large outdoor sculptures created out of Mesozoic petrified wood. It was created in 1933 by Ole Quammen, a former mayor of Lemmon.”
Wikipedia article Lemmon Petrified Wood Park & Museum, CC BY-SA 4.0.
One of 19 National Register listings published here for Perkins County · listed in 1977 · category: Site.
Sources: the Wikipedia article · the National Register database, National Park Service