This lists all identified correspondents. Their letters can only be accessed through the Letters page.
Osborne, Abraham Beevor collector?
Osborne, Charles Churchill, 1859(?)-1944 secretary to Baroness Burdett-Coutts, editor
Osgood, James Ripley, 1836-1892 publisher
Osman, William R. “Ossie”, d.1891 actor
Ouida, (Marie Louise de la Ramée), 1839-1908 novelist
Ouseley, Mulvey (John Mulvy) journalist, novelist, dramatist
Outine, Natalie foreign fan resident in London
Paget, Lord Alfred Henry, 1816-1888 MP, chief equerry 1846-1874
Paget, Sir James, 1st Bart, 1814-1899 surgeon
Palgrave, Francis Turner, 1824-1897 poet, compiler
Pall Mall Gazette
Palma di Cesnola, Luigi, conte, 1832/33-1904 museum director, archaeologist, consul
Palmer, Albert Marshman, 1838-1905 American manager
Palmer, Emma Nevada, “Emma Nevada”, née Wixom, 1859-1940 singer
Palmer, Henry John Smalley, 1853-1903 editor of The Yorkshire Post