Percy Bysshe Shelley, Donald H. Reiman, Michael O'Neill (1985). “Fair-copy Manuscripts of Shelley's Poems in European and American Libraries: Including Percy Bysshe Shelley's Holographs and Copies in the Hand of Mary W. Shelley, Located in the United States, England, Scotland, Ireland, and Switzerland, as Well as the Holograph Draft of Keats's Robin Hood”, p.17, Taylor & Francis