Great Falls author Jerry Clark discusses his new book, published in September by the University of Utah Press. While "Supplying Custer" focuses on a historical archaeology project on the Yellowstone River, the historical context is broadly drawn around the challenges of supplying a 19th-century army and more specifically on the logistical issues of the 1876 Sioux War. (Presence of the Past Program Series, Jan. 8, 2015)