Abstract This collection contains supporting documentation acquired from Dr. Robert Anderson of Portland, Oregon regarding the Sitting Bull Ledger Drawings. The ledger drawings referenced in this collection were done by Sitting Bull in 1882 during the time he was held as prisoner of war at Fort Randall in the Dakota Territories. The drawings were sold or traded for goods to Mr. Charles Pratt a Post Trader, the drawings were then given to G. H. Pettinger. Those drawings are now part of the collection...