"The American in England"
The book is Mabbott's own copy of the Harrison edition of Poe, which he annotated in preparing his edition. His annotations are visible in the photocopy. The annotations in blue ink on the photocopy are in Maureen Mabbott's hand.
Papers of Thomas Ollive Mabbott, Special Collections, University of Iowa Libraries; "The Murders in the Rue Morgue," in Collected Works of Edgar Allan Poe, Vol. II: Tales and Sketches, ed. Thomas Ollive Mabbott (Cambridge: The Belknap Press of Harvard University Press, 1978), 521-574.