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- Two Churches: England and Italy in the Thirteenth Century, With an additional essay by the Author. by Robert Brentano, 1988-02-10
- The Hugo Winners Volumes One and Two (1 and 2, I and II) by Isaac (editor): Walter M. Miller, Jr. / Eric Frank Russell / Murray Lein Asimov, 1975
- The Grievances Between Authors & Publishers: Being the Report of the Conferences of the Incorporated Society of Authors, Held at Willis'S Rooms, in March, 1887; with Additional Matter and Summary
- Science Fiction of the '30s by Damon (editor): Robert H. Wilson / Murray Leinster / Frank K. Kelly / Jo Knight, 1975
- The historical and the posthumous memoirs of Sir Nathaniel William Wraxall, 1772-1784; ed., with notes and additional chapters from the author's unpublished ms. by Nathaniel William Wraxall, Henry Benjamin Wheatley, 2010-09-03
- The New Testament, with Explanatory Notes, by J. Wesley. Ed., with Additional Notes by the Author of 'helps for the Pulpit' by John Wesley, 2010-02-04
- The Shipwreck, a Poem. With Additional Notes, and a Sketch of the Author's Life. With Engravings by R. Dodd by William Falconer, 2009-12-21
- Mathematical and physical papers, by George Gabriel Stokes. Reprinted from the original journals and transactions, with additional notes by the author.Vol. 5 by George Gabriel,Sir Stokes, 2001-01-01
- by Valerie (principal photography by) [additional photography by William Rex Shaff (Author)The Future According To Kids (Hardcover) by Valerie (principal photography by) [additional photography by William Rex Shaff (Author), 1999
- A second letter to the Reverend Mr. Peers, Vicar of Faringdon, Berks: in answer to his Additional preface to the Character of an honest Dissenter. By the author of the first letter. by Letter to th Author of the first letter, 2010-05-27
- Life of William Blake, with selections from his poems and other writings. A new and enl. ed. Illustrated from Blake's own works, with additional letters and a memoir of the author by Alexander Gilchrist, 2010-08-25
- Before the Golden Age: A Science Fiction Anthology of the 1930s by Isaac (editor): Edmond Hamilton / Neil R. Jones / Capt. S.P. Meek / P. S Asimov, 1974
- The Astounding Science Fiction Anthology by John W, Jr. (editor): Robert Heinlein / Jack Williamson / A.E. Van Vog Campbell, 1952
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