1900
Joseph Henry, 1800
William Couper, born Norfolk, VA 1853-died Easton, MD 1942, 1900
William Couper, born Norfolk, VA 1853-died Easton, MD 1942, 1880
Joseph Henry, 1860
Joseph Henry, 1880
Joseph Henry, 1870
Joseph Henry, 1980
Joseph Henry, 1910
Joseph Henry, 1890