Philadelphia Yearly Meeting of Friends (Orthodox : 1827-1955). Indian Committee (1827-1948)

Henry Simmons, who belonged to the Middletown Monthly Meeting, spent a year with the Seneca near Cornplanter's village along with Halliday Jackson and Joel Swayne. There, the group of missionaries set up a school and model farm. Simmons's letterbooks are comprised of business and government correspondence related to his work with various Indigenous nations.