- A History of Wood engraving (1883)
- Studies in Letters and Life (1890)
- Heart of Man (1899)
- Wild Eden (1899)
- Makers of Literature (1900)
- Nathaniel Hawthorne (1902)
- America in Literature (1903)
- Swinburne (1905)
- The Torch: Eight Lectures on Race Power in Literature (1905)
- Emerson (1907)
- The Appreciation of Literature (1907)
- Great Writers (1907)
- Life of Poe (two volumes, 1909)
- The Inspiration of Poetry (1910)
- Wendell Phillips (1912)
- A Day at Castrogiovanni (1912)
- North Africa and the Desert (1914)
- Two Phases of Criticism (1914)
Other publications:
- Life of Edgar Allan Poe in the "American Men of Letters" series (1885)
- The North Shore Watch, and Other Poems (1890)
- With Edmund Clarence Stedman, Works of Edgar Allan Poe (ten volumes, 1895)
- Collected Poems (1903)
- The Kingdom of All Souls, poems, (1912)
- The Flight and Other Poems (1914)
He edited
The complete Poetical Works of Percy Bysshe Shelley (1892);
Lamb's Essays of Elia (1892);
The Works of Edgar Allan Poe, with E. C. Stedman (1894); and
Select Poems of Aubrey de Vere (1894). He wrote compositions in the "National Studies in American Letters," and
Columbia University Studies in Comparative Literature, (nine volumes).