After the Army Surgeon General ordered the collection of Native crania and burial remains for the Army Medical Museum during the mid-to-late-1800s, army personnel and "Indian hunters" complied, making considerable profits from the sale of Native burial remains. They collect over 4,000 heads from beheadings, scalping bounties, battlefields, burial grounds, prisoner of war camps, hospitals, fresh graves, and burial scaffolds from across the country. Half of the ancestors' remains are "donated" to the U.S. National Museum of Natural History of the Smithsonian Institution in 1898.