On Emerson:
Chs. 36-38 of Robert D. Richardson, Emerson: The Mind on Fire (U of California P, 1995). E-res.

Cyrus R. K. Patell, "Emersonian Strategies: Negative Liberty, Self-Reliance, and Democratic Individuality," Nineteenth-Century Literature 48 (1994): 440-79. E-res.

William Rossi, "Emerson, Nature, and Natural Science," A Historical Guide to Ralph Waldo Emerson, ed. Joel Myerson (Oxford and New York: Oxford UP, 2000), 101-150.
E-res.

On Fuller:
Monika M. Elbert, "Striking a Historical Pose: Antebellum Tableaux Vivants, Godey's Illustrations, and Margaret Fuller's Heroines," New England Quarterly 75 (2002): 235-75. E-res.

Ch. 11 of Joan von Mehren, Minerva and the Muse: A Life of Margaret Fuller (Amherst: U of Massachusetts P, 1994). E-res.

On Poe:
Daniel Hoffman, Poe Poe Poe Poe Poe Poe Poe (1972; Baton Rouge: Louisiana State UP, 1998). Reserve.

J. Gerald Kennedy, ed., A Historical Guide to Edgar Allan Poe (Oxford and New York: Oxford UP, 2001). Reserve.

Kevin J. Hayes, ed., The Cambridge Companion to Edgar Allan Poe (Cambridge: Cambridge UP, 2002). Reserve.

On The Scarlet Letter:
Boewe and Murphy, "Hester Prynne in History," Nina Baym, "The Romantic Malgré Lui," and Richard Brodhead, [Method in The Scarlet Letter], in the Norton Critical Edition.

Larry J. Reynolds, "The Scarlet Letter and the Revolutions Abroad," American Literature 57 (1985): 44-67. E-res.

Stephen Railton, "The Address of The Scarlet Letter," in Readers in History: Nineteenth-Century American Literature and the Contexts of Response, ed. James L. Machor (Baltimore: Johns Hopkins UP, 1993), 138-63. E-res.

On Douglass:
Essays in Norton Critical Edition by McFeely, Ripley, Andrews, and Baker.

Russell Reising, "Conclusion: The Significance of Frederick Douglass," from his book The Unusable Past (New York: Methuen, 1986), 256-72. E-res.

On Moby-Dick:
The "Contexts" section of the Norton Critical Edition includes a lot of interesting material; read selectively from that section and look at the contemporary reviews of the book in the "Criticism" section.

John Bryant, "Moby-Dick as Revolution," in The Cambridge Companion to Herman Melville, ed. Robert S. Levine (Cambridge: Cambridge UP, 1998), 65-90. E-res.

T. Walter Herbert, "Calvinist Earthquake: Moby-Dick and Religious Tradition," in New Essays on Moby-Dick, ed. Richard H. Brodhead (Cambridge: Cambridge UP, 1986), 109-139. E-res.

On Walden:
F. O. Matthiessen, "Walden: Craftsmanship vs. Technique," Barbara Johnson, "A Hound, a Bay Horse, and a Turtle Dove: Obscurity in Walden," and H. Daniel Peck, "The Worlding of Walden," in the Norton Critical Edition.

Bill McKibben, "Walden Revisited," Double-Take 3.2 (1997): 125-30. E-res.

Also on hard-copy reserve:

David Leverenz, Manhood and the American Renaissance (Ithaca: Cornell UP, 1989).

F. O. Matthiessen, American Renaissance (London, Toronto, and New York: Oxford UP, 1941).

David S. Reynolds, Beneath the American Renaissance (New York: Knopf, 1988).