In 1935 Hagglund followed up his discovery of "Royal Savage" with the discovery of "Philadelphia"s remains, sitting upright on the lake bottom. He raised her that year; she is now on display at the Smithsonian Institution's National Museum of American History in Washington, D.C., and is listed on the National Register of Historic Places and is designated a National Historic Landmark. The site of the battle, Valcour Bay, was declared a National Historic Landmark on January 1, 1961, and added to the National Register on October 15, 1966.