Hollyer, Samuel, engraver. Walt Whitman. 1854. Steel engraving after a lost daguerreotype by Gabriel Harrison, 13.9 × 10.1 cm (plate). Library of Congress Prints and Photographs Division, Washington, D.C. Catalog no. LC-USZ62-8118.
Whitman, Walt Leaves of Grass
O Captain! my Captain! our fearful trip is done,