Herman Melville

The Confidence-Man: His Masquerade. By Herman Melville. Authorised Edition. London: Longman, Brown, Green, Longmans, & Roberts, 1857. —This is one of the wildest rides in American literature, and here is a neatly-printed one-volume edition in a very good scan.

Israel Potter: His Fifty Years of Exile. By Herman Melville. New York: G. P. Putnam & Co., 1855.
Another copy.

Moby-Dick; or, the Whale. By Herman Melville. New York: Harper & Brothers, Publishers. London: Richard Bentley. 1851. —This is a scan of a facsimile of the first edition; it is available in full view, but Velvet Element Books claims an unenforceable copyright on the images.

The same first edition at archive.org, without spurious copyright restrictions, in a very good scan from Duke University, including Melville's autograph.

Moby Dick; or, the Whale. By Herman Melville. Illustrated by I. W. Taber. New York: Charles Scribner's Sons, 1902. —Gorgeous illustrations (see the frontispiece above) in an edition published shortly after Melville's forgotten masterpiece was rediscovered. —Like most editions published shortly after the rediscovery of Moby-Dick, this one transposes the "Etymology" and "Extracts" at the beginning of the book to the back, which deprives them of their significance in setting the atmosphere for the drama to follow.
It may be of interest to students of Melville to read the short tale that inspired Melville's masterpiece: Mocha Dick: or the White Whale of the Pacific: A Leaf from a Manuscript Journal. By J. N. Reynolds, Esq., in the Knickerbocker for May, 1839.

Pierre; or, the Ambiguities. By Herman Melville. New York: Harper & Brothers, Publishers, 1852.