Addresses of John Romeyn Brodhead, Esq., and His Excellency, Gov. Horatio Seymour, Delivered Before the Clinton Hall Association and Mercantile Library Association, at Their Celebration, Commemorative of the Removal of the Library to Astor Place, Held in the Church of the Puritans, Union Square, on the Evening of 8th June, 1854: With Reports Then Submitted