Letters, notes, autographs, portraits, and other materials collected by the Harwood Family over a period of two hundred-fifty years. Much of the early materials, including Revolutionary War era materials, are navy and military service related. Later materials include letters from major political, financial, and literary figures. Correspondents include Herbert Hoover, Nelson A. Rockefeller, Ray Lyman Wilbur, Pearl S. Buck, and Carl Sandburg. Also included are engravings, photographs, and autographs of historical figures.