This is a list of some references commonly used by me, TCMemoire, listed here for convenience. Some of these subjects will overlap.
Black Hills
Ghost towns
Ghost Towns and Other Historical Sites of the Black Hills
Raisch, Bruce A. (2006). "South Dakota Black Hills Ghost Towns". Ghost Towns and Other Historical Sites of the Black Hills (4th ed.). Virginia Beach, Virginia: Donning Company Publishers. ISBN978-1-57864-351-6.
The Bonanza Trail: Ghost Towns and Mining Camps of the West
Wolle, Muriel Sibell (1966) [First published 1953]. The Bonanza Trail: Ghost Towns and Mining Camps of the West (5th ed.). Bloomington, IN: Indiana University Press.
Yesterday's Gold Camps and Mines in the Northern Black Hills
Klock, Irma H. (1975). Yesterday's Gold Camps and Mines in the Northern Black Hills (1st ed.). Lead, SD: Seaton Publishing Company.
History
Spearfish: A History
Higbee, Paul; Aney, Kathleen (2000). Spearfish: A History. Spearfish, SD: Black Hills and Bighorns History Project. ISBN0-9676762-0-7.
Railroads
Railroads of the Black Hills
Fielder, Mildred (1985) [First published 1964]. Railroads of the Black Hills. Deadwood, SD: Dakota Graphics. LCCN64-21320.