Confluence of Mississippi River and Catfish Creek in Mines of Spain State Recreation Area, Dubuque, Iowa. County/parish: Dubuque.
Added to the National Register of Historic Places November 21, 1988. NRIS 88002662.
Part of Mines of Spain Archeological MPS (NRIS 64500171).
1 contributing object.National Park Service documentation: https://catalog.archives.gov/id/75336387