From the record
“Auburn Valley State Park is a 471-acre (191 ha) public recreation and historic preservation area located in Yorklyn, Delaware, United States. The state park preserves the former home and estate of the Marshall family as well as portions of the family's former mills alongside the Red Clay Creek and additional land purchased by the state.”
Wikipedia article Auburn Valley State Park, CC BY-SA 4.0.
One of 411 National Register listings published here for New Castle County · listed in 1980 · category: District.
Sources: the Wikipedia article · the case file at the National Archives · the National Register database, National Park Service · the Wikipedia article




