Scope and Content of the Collection From the Collection: Miscellaneous collection of twelve letters written by Sir William Johnson between 1755 and 1773. The content of most of the correspondence relates to the French and Indian War, Indian treaties and conferences, the Conestoga Massacre (1763), land patents, and the appointment of Johnson’s successor. Correspondents include: Cadwallader Colden, George Croghan, Thomas Gage, Peter Gilman, Richard Gridley, Hubert Marshall, John Penn, William Shirley, Henry Van Schaack, John Watts, and Thomas...