Geological Survey Water-Supply Paper 1475-D Geology and Occurrence of Ground Water at Jewel Cave National Monument, South Dakota

Darton, N. H., 1918, Artesian waters in the vicinity of the Black Hills, South Dakota : U.S. Geol. Survey Water-Supply Paper 428,64 p.

Darton, N. H., and Paige, Sidney, 1925, Description of the central Black Hills: U.S. Geol. Survey Geol. Atlas, Folio 219.