- Custer State Park: Center Lake - East Custer SD" grew rapidly in the 1920s, acquired additional lands; during the 1930s the Civilian Conservation Corps made many park improvements. CCC men laid out campgrounds and picnic areas, built a massive park museum, miles of roads, sturdy bridges and a stone fire tower, but, most importantly, constructed three dams creating Stockade, Center and Legion Lakes, all of which provide for water-based recreation." --John R. Thune, "Custer State Park"
- Custer State Park: Legion Lake - East Custer SD"The grew rapidly in the 1920s, acquired additional lands; during the 1930s the Civilian Conservation Corps made many park improvements. CCC men laid out campgrounds and picnic areas, built a massive park museum, miles of roads, sturdy bridges and a stone fire tower, but, most importantly, constructed three dams creating Stockade, Center and Legion Lakes, all of which provide for water-based recreation." --John R. Thune, "Custer State Park"