More on John Boyle O'Reilly's authorship of the poem, "At Fredericksburg."
Civil War Poetry

"The Cambridge History of English and American Literature in 18 Volumes." Volume XVI. Early National Literature, Part II; Later National Literature, Part I.
II. Poets of the Civil War I. Paragraph 7. The Earliest Fighting in Virginia.

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"The advance of Lee to Antietam, his repulse there, and his retreat found a record in Whittier's "Barbara Frietchie," Melville's "The Victor of Antietam," Boker's "The Crossing at Fredericksburg," John Boyle O'Reilly's "At Fredericksburg," and Aldrich's exquisite sonnets "Fredericksburg" and "By the Potomac.""