Freud produced eight editions of The Interpretation of Dreams over a period of 30 years, the last in 1930, nine years before his death. The changes appear largely in footnotes and in the insertion of illustrative content in his sixth chapter, on the mechanisms he inferred to explain how a dream’s meaning, as constructed through analysis, could manifest as it does. Freud made many of his emendations in response to comments from colleagues, patients, and other respondents on earlier editions.^{Footnote 1} I treat the material from the different editions as one, thus following his eighth edition, as the changes do not affect the main axes of the account. I also set aside emendations to the dream theory Freud made in other writings, as they do not impact the points of concern here; I include in Chapter 7, Freud’s 1920 discussion of dreams he believes go “Beyond the Pleasure Principle.”