This collection consists of the letters received by and letters sent to the War Department, including correspondence from Indian superintendents and agents, factors of trading posts, Territorial and State governors, military commanders, Indians, missionaries, treaty and other commissioners, Treasury Department officials, and persons having commercial dealings with the War Department, and other public and private individuals. In addition, attachments include vouchers, receipts, requisitions, abstracts and financial statements, certificates of deposit, depositions, contracts, newspapers, copies of speeches to Indians, proceedings of conferences with Indians in Washington, licenses of traders, passports for travel in the Indian country, appointments, and instructions to commissioners, superintendents, agents, and other officials.