Figure 1.a. Letter to Dawson Turner, 9 June 1818. Used with permission. Rosenbach Museum and Library.

Figure 1.a. Letter to Dawson Turner, 9 June 1818. Used with permission. Rosenbach Museum and Library.

Figure 15. “The Sun at His Eastern Gate,” plate 3 of L’Allegro, c. 1816 (Butlin 543.3). Used with permission. The Morgan Library and Museum, 1949.4:3. Purchased with the assistance of the Fellows with the special support of Mrs. Landon K. Thorne and Mr. Paul Mellon.