On September 3, 1889, James McNeill Whistler wrote a letter from Amsterdam to the Fine Arts Society in London describing, with an undercurrent of Whistlerian sarcasm, his most recent artistic activity: “I find myself doing far finer work than any I have hitherto produced—and the subjects appeal to me most sympathetically—which is all important. . . . I have begun etchings here—that already give me great satisfaction—I shall therefore go on, and I will produce...