American philanthropist, born in New Jersey on the 3rd of December 1771; died in New York City on the 7th of May 1852. To protect the rights of the Africans, an abolition society had been formed, of which Hopper became a prominent member; he also united with a number of other benevolent societies, of all of which he was an active member. In 1829 he removed to New York City to establish a bookstore in the interest of his denomination. In 1830 Mr. Hopper visited Ireland and England. On his return to New York City he became devoted to the work of the Prison Association, and in 1841 became book-agent and treasurer for the Anti-Slavery Society. In 1845 he relinquished these offices to devote the remainder of his life to the work of the Prison Association, assisted by his daughter, Mrs. Abby H. Gibbons. Through her exertions an asylum was founded for women unfortunates, entitled The Isaac T. Hopper Home. His Life was written by Lydia Maria Child (Boston, 1853).